docs(forms): Documentation and examples for Control, ControlGroup, and ControlArray.
docs(forms): Documentation and examples for Control, ControlGroup, and ControlArray.

Closes #4398

hansl/angular,ollie314/angular,erictsangx/angular,tapas4java/angular,LucasSloan/angular,Symagic/angular,hdeshev/angular,dtoroshin/n2oDoc,TedSander/angular,kara/angular,robwormald/angular,alfonso-presa/angular,kegluneq/angular,mgiambalvo/angular,kegluneq/angular,chrisse27/angular,heathkit/angular,meeroslav/angular,mdegoo/angular,markharding/angular,not-for-me/angular,ericmartinezr/angular,zhura/angular,snaptech/angular,UIUXEngineering-Forks/angular,juristr/angular,yjbanov/angular,vicb/angular,jhonmike/angular,hpinsley/angular,gkalpak/angular,domusofsail/angular,gnomeontherun/angular,mixed/angular,angularbrasil/angular,chrisse27/angular,graveto/angular,vandres/angular,jelbourn/angular,SaltyDH/angular,IAPark/angular,hterkelsen/angular,awerlang/angular,ghetolay/angular,asnowwolf/angular,vikerman/angular,pk-karthik/framework-js-angular,xcaliber-tech/angular,UIUXEngineering/angular,kwalrath/angular,micmro/angular,shuhei/angular,tbosch/angular,zhura/angular,gionkunz/angular,brandonroberts/angular,kevinmerckx/angular,alexpods/angular,alexcastillo/angular,Flounn/angular,ocombe/angular,mixed/angular,nosovk/angular,matsko/angular,epotvin/angular,tbosch/angular,trshafer/angular,m18/angular,Brocco/angular,ultrasonicsoft/angular,angular/angular,heathkit/angular,chuckjaz/angular,filipesilva/angular,martinmcwhorter/angular,JiaLiPassion/angular,mlynch/angular,vinagreti/angular,alexcastillo/angular,souldreamer/angular,kevinmerckx/angular,yjbanov/angular,mdegoo/angular,youdz/angular,robwormald/angular,dsebastien/angular,gnomeontherun/angular,gjungb/angular,metasong/angular,kwalrath/angular,jonrimmer/angular,templth/angular,e-hein/angular,ocombe/angular,angular-indonesia/angular,chajath/angular,kylecordes/angular,chadqueen/angular,smartm0use/angular,TedSander/angular,m18/angular,petebacondarwin/angular,ScottSWu/angular,Flounn/angular,zzo/angular,ocombe/angular,mhevery/angular,chrisse27/angular,martinmcwhorter/angular,AlmogShaul/angular,jasonaden/angular,itamark/angular,yjbanov/angular,juleskremer/angular,itamar-Cohen/angular,NathanWalker/angular,angularbrasil/angular,aboveyou00/angular,angularbrasil/angular,mixed/angular,shirish87/angular,TedSander/angular,panuruj/angular,hankduan/angular,dejour/angular,ochafik/angular,kegluneq/angular,mlynch/angular,dtoroshin/n2oDoc,mhegazy/angular,tolemac/angular,naomiblack/angular,cyrilgandon/angular,Brocco/angular,juristr/angular,gilamran/angular,wKoza/angular,trshafer/angular,itamar-Cohen/angular,pk-karthik/framework-js-angular,jesperronn/angular,UIUXEngineering-Forks/angular,basvandenheuvel/angular,asnowwolf/angular,IdeaBlade/angular,laco0416/angular,vamsivarikuti/angular,robertmesserle/angular,ValtoFrameworks/Angular-2,e-hein/angular,antonmoiseev/angular,epotvin/angular,willseeyou/angular,alamgird/angular,asnowwolf/angular,choeller/angular,kylecordes/angular,cyrilgandon/angular,xcaliber-tech/angular,shairez/angular,youdz/angular,chalin/angular,tycho01/angular,shuhei/angular,jonrimmer/angular,jonrimmer/angular,IdeaBlade/angular,zolfer/angular,vamsivarikuti/angular,ttowncompiled/angular,manekinekko/angular,juleskremer/angular,bkyarger/angular,kylecordes/angular,filipesilva/angular,martinmcwhorter/angular,youdz/angular,souldreamer/angular,dydek/angular,snaptech/angular,jhonmike/angular,weswigham/angular,jonrimmer/angular,NathanWalker/angular,cyrilgandon/angular,dsebastien/angular,chadqueen/angular,yanivefraim/angular,petebacondarwin/angular,pkozlowski-opensource/angular,ttowncompiled/angular,wKoza/angular,angular/angular,Mathou54/angular,GistIcon/angular,vicb/angular,hannahhoward/angular,alexpods/angular,metasong/angular,bkyarger/angular,weswigham/angular,JanStureNielsen/angular,vsavkin/angular,aboveyou00/angular,zzo/angular,chadqueen/angular,manekinekko/angular,wKoza/angular,mhevery/angular,zzo/angular,amarth1982/angular,tyleranton/angular,Tragetaschen/angular,SaltyDH/angular,UIUXEngineering-Forks/angular,robertmesserle/angular,dmitriz/angular,laco0416/angular,JanStureNielsen/angular,alexpods/angular,cironunes/angular,gdi2290/angular,rbevers/angular,hankduan/angular,markharding/angular,shairez/angular,StephenFluin/angular,wesleycho/angular,shairez/angular,tycho01/angular,vandres/angular,itamar-Cohen/angular,meeroslav/angular,hankduan/angular,ollie314/angular,kevinmerckx/angular,mikeybyker/angular,panuruj/angular,kara/angular,souldreamer/angular,naomiblack/angular,dmitriz/angular,gionkunz/angular,zzo/angular,pk-karthik/framework-js-angular,mzgol/angular,gilamran/angular,gilamran/angular,souldreamer/angular,angular/angular,hannahhoward/angular,ghetolay/angular,cassand/angular,meeroslav/angular,micmro/angular,wesleycho/angular,tolemac/angular,aboveyou00/angular,vsavkin/angular,blesh/angular,juristr/angular,hannahhoward/angular,ultrasonicsoft/angular,SekibOmazic/angular,chajath/angular,e-schultz/angular,basvandenheuvel/angular,angular-indonesia/angular,StacyGay/angular,youdz/angular,m18/angular,StacyGay/angular,ValtoFrameworks/Angular-2,e-hein/angular,pkozlowski-opensource/angular,epotvin/angular,mlaval/angular,IgorMinar/angular,dmitriz/angular,huoxudong125/angular,gdi2290/angular,amarth1982/angular,wKoza/angular,mgol/angular,gjungb/angular,vamsivarikuti/angular,diestrin/angular,JanStureNielsen/angular,Mathou54/angular,gdi2290/angular,mlynch/angular,Brocco/angular,vikerman/angular,vicb/angular,yanivefraim/angular,micmro/angular,mgechev/angular,e-schultz/angular,mixed/angular,hpinsley/angular,robertmesserle/angular,hannahhoward/angular,alxhub/angular,cexbrayat/angular,Brocco/angular,gkalpak/angular,yanivefraim/angular,kylecordes/angular,rbevers/angular,angular/angular,chadqueen/angular,dtoroshin/n2oDoc,IgorMinar/angular,StephenFluin/angular,IdeaBlade/angular,wKoza/angular,choeller/angular,zolfer/angular,ghetolay/angular,ochafik/angular,zolfer/angular,rkirov/angular,e-schultz/angular,vikerman/angular,ultrasonicsoft/angular,chajath/angular,aboveyou00/angular,alexpods/angular,Brocco/angular,yanivefraim/angular,rbevers/angular,matsko/angular,Flounn/angular,willseeyou/angular,domusofsail/angular,mixed/angular,willseeyou/angular,markharding/angular,brandonroberts/angular,ocombe/angular,JanStureNielsen/angular,mhegazy/angular,LucasSloan/angular,hpinsley/angular,JSMike/angular,chajath/angular,asnowwolf/angular,huoxudong125/angular,heathkit/angular,markharding/angular,jteplitz602/angular,gionkunz/angular,aboveyou00/angular,JSMike/angular,ollie314/angular,gdi2290/angular,trshafer/angular,mhevery/angular,chrisse27/angular,chuckjaz/angular,jesperronn/angular,willseeyou/angular,huoxudong125/angular,sjtrimble/angular,tolemac/angular,diestrin/angular,snaptech/angular,JiaLiPassion/angular,rkirov/angular,vamsivarikuti/angular,LucasSloan/angular,panuruj/angular,alfonso-presa/angular,jesperronn/angular,tycho01/angular,jhonmike/angular,SekibOmazic/angular,tyleranton/angular,jteplitz602/angular,templth/angular,rbevers/angular,kwalrath/angular,cironunes/angular,IAPark/angular,hpinsley/angular,dejour/angular,mprobst/angular,SekibOmazic/angular,vsavkin/angular,wKoza/angular,Tragetaschen/angular,zzo/angular,m18/angular,Symagic/angular,manekinekko/angular,epotvin/angular,mgol/angular,shirish87/angular,xcaliber-tech/angular,petebacondarwin/angular,cassand/angular,UIUXEngineering/angular,yjbanov/angular,pkozlowski-opensource/angular,Toxicable/angular,zolfer/angular,ollie314/angular,wesleycho/angular,Symagic/angular,vsavkin/angular,nosovk/angular,Tragetaschen/angular,blesh/angular,trshafer/angular,Toxicable/angular,kevinmerckx/angular,SekibOmazic/angular,Tragetaschen/angular,amarth1982/angular,e-schultz/angular,antonmoiseev/angular,ghetolay/angular,gjungb/angular,manekinekko/angular,shuhei/angular,mhegazy/angular,NathanWalker/angular,micmro/angular,ericmartinezr/angular,kegluneq/angular,mgiambalvo/angular,basvandenheuvel/angular,manekinekko/angular,alfonso-presa/angular,vandres/angular,ultrasonicsoft/angular,dydek/angular,Mathou54/angular,cironunes/angular,mgiambalvo/angular,itamark/angular,smartm0use/angular,itamar-Cohen/angular,amarth1982/angular,alexpods/angular,ochafik/angular,ScottSWu/angular,angular-indonesia/angular,gjungb/angular,AlmogShaul/angular,alexpods/angular,hannahhoward/angular,gilamran/angular,jelbourn/angular,wesleycho/angular,aaron-goshine/angular,StacyGay/angular,vandres/angular,cexbrayat/angular,matsko/angular,hterkelsen/angular,graveto/angular,royling/angular,rkirov/angular,JSMike/angular,robertmesserle/angular,brandonroberts/angular,domusofsail/angular,mdegoo/angular,ochafik/angular,dsebastien/angular,hansl/angular,weswigham/angular,ghetolay/angular,dtoroshin/n2oDoc,mdegoo/angular,martinmcwhorter/angular,zzo/angular,naomiblack/angular,rjamet/angular,dydek/angular,filipesilva/angular,xcaliber-tech/angular,zolfer/angular,SaltyDH/angular,IdeaBlade/angular,ValtoFrameworks/Angular-2,laskoviymishka/angular,m18/angular,mhegazy/angular,alexeagle/angular,sarunint/angular,yjbanov/angular,heathkit/angular,mlynch/angular,tycho01/angular,SekibOmazic/angular,ochafik/angular,angularbrasil/angular,shuhei/angular,souvikbasu/angular,snaptech/angular,jasonaden/angular,hansl/angular,StephenFluin/angular,huoxudong125/angular,UIUXEngineering-Forks/angular,ericmartinezr/angular,ericmartinezr/angular,zolfer/angular,souvikbasu/angular,mgol/angular,alxhub/angular,juristr/angular,itamark/angular,pk-karthik/framework-js-angular,snaptech/angular,domusofsail/angular,rkirov/angular,alexeagle/angular,rkirov/angular,alamgird/angular,e-schultz/angular,ocombe/angular,alexeagle/angular,blesh/angular,mprobst/angular,wesleycho/angular,jteplitz602/angular,jelbourn/angular,pkozlowski-opensource/angular,angular-indonesia/angular,hterkelsen/angular,mgol/angular,royling/angular,jelbourn/angular,ValtoFrameworks/Angular-2,pk-karthik/framework-js-angular,yanivefraim/angular,mlaval/angular,IgorMinar/angular,erictsangx/angular,heathkit/angular,hannahhoward/angular,matsko/angular,juristr/angular,kylecordes/angular,IAPark/angular,naomiblack/angular,hdeshev/angular,laskoviymishka/angular,ValtoFrameworks/Angular-2,templth/angular,cassand/angular,zhura/angular,tapas4java/angular,mgol/angular,mprobst/angular,SaltyDH/angular,chuckjaz/angular,bkyarger/angular,laco0416/angular,asnowwolf/angular,mzgol/angular,mlynch/angular,gkalpak/angular,dsebastien/angular,choeller/angular,yanivefraim/angular,tamascsaba/angular,chuckjaz/angular,StacyGay/angular,tyleranton/angular,chalin/angular,mgechev/angular,alfonso-presa/angular,ScottSWu/angular,gilamran/angular,erictsangx/angular,amarth1982/angular,mzgol/angular,hansl/angular,vicb/angular,templth/angular,kwalrath/angular,mlaval/angular,Toxicable/angular,alfonso-presa/angular,alexcastillo/angular,metasong/angular,mgechev/angular,GistIcon/angular,TedSander/angular,UIUXEngineering-Forks/angular,LucasSloan/angular,hterkelsen/angular,templth/angular,shirish87/angular,epotvin/angular,itamark/angular,smartm0use/angular,filipesilva/angular,vikerman/angular,smartm0use/angular,graveto/angular,mlaval/angular,ericmartinezr/angular,bkyarger/angular,GistIcon/angular,not-for-me/angular,ScottSWu/angular,kegluneq/angular,chuckjaz/angular,antonmoiseev/angular,zhura/angular,souldreamer/angular,alamgird/angular,kegluneq/angular,Toxicable/angular,shuhei/angular,SaltyDH/angular,Tragetaschen/angular,mprobst/angular,UIUXEngineering/angular,ttowncompiled/angular,aaron-goshine/angular,xcaliber-tech/angular,blesh/angular,kylecordes/angular,ScottSWu/angular,metasong/angular,cyrilgandon/angular,basvandenheuvel/angular,alamgird/angular,IAPark/angular,tbosch/angular,cexbrayat/angular,manekinekko/angular,petebacondarwin/angular,royling/angular,snaptech/angular,sarunint/angular,aaron-goshine/angular,sarunint/angular,diestrin/angular,gionkunz/angular,metasong/angular,juristr/angular,cassand/angular,jhonmike/angular,tamascsaba/angular,vsavkin/angular,souldreamer/angular,cexbrayat/angular,IgorMinar/angular,Flounn/angular,vinagreti/angular,IAPark/angular,LucasSloan/angular,sarunint/angular,jhonmike/angular,not-for-me/angular,nosovk/angular,martinmcwhorter/angular,markharding/angular,hterkelsen/angular,Flounn/angular,hdeshev/angular,filipesilva/angular,tamascsaba/angular,chalin/angular,StephenFluin/angular,mdegoo/angular,jelbourn/angular,nosovk/angular,gionkunz/angular,dejour/angular,metasong/angular,mlynch/angular,awerlang/angular,jteplitz602/angular,vicb/angular,choeller/angular,kara/angular,tapas4java/angular,brandonroberts/angular,alfonso-presa/angular,kevinmerckx/angular,rkirov/angular,dejour/angular,basvandenheuvel/angular,not-for-me/angular,JanStureNielsen/angular,domusofsail/angular,dtoroshin/n2oDoc,alexeagle/angular,Brocco/angular,graveto/angular,chajath/angular,StacyGay/angular,royling/angular,jasonaden/angular,gnomeontherun/angular,IdeaBlade/angular,Mathou54/angular,petebacondarwin/angular,willseeyou/angular,mlaval/angular,vandres/angular,ttowncompiled/angular,mikeybyker/angular,diestrin/angular,Symagic/angular,chadqueen/angular,cexbrayat/angular,alexcastillo/angular,petebacondarwin/angular,gjungb/angular,jonrimmer/angular,kara/angular,hankduan/angular,gionkunz/angular,panuruj/angular,brandonroberts/angular,mgechev/angular,UIUXEngineering-Forks/angular,bkyarger/angular,GistIcon/angular,antonmoiseev/angular,sarunint/angular,vinagreti/angular,UIUXEngineering/angular,laskoviymishka/angular,tolemac/angular,Toxicable/angular,souvikbasu/angular,kara/angular,e-schultz/angular,mzgol/angular,gnomeontherun/angular,GistIcon/angular,IgorMinar/angular,basvandenheuvel/angular,brandonroberts/angular,rjamet/angular,tapas4java/angular,mixed/angular,heathkit/angular,robertmesserle/angular,robertmesserle/angular,vinagreti/angular,ollie314/angular,StacyGay/angular,IAPark/angular,m18/angular,rjamet/angular,ericmartinezr/angular,meeroslav/angular,wesleycho/angular,shirish87/angular,dydek/angular,chadqueen/angular,jesperronn/angular,chrisse27/angular,NathanWalker/angular,amarth1982/angular,martinmcwhorter/angular,jasonaden/angular,huoxudong125/angular,juleskremer/angular,souvikbasu/angular,not-for-me/angular,itamark/angular,tamascsaba/angular,UIUXEngineering/angular,mgechev/angular,laskoviymishka/angular,chalin/angular,mprobst/angular,weswigham/angular,alamgird/angular,Toxicable/angular,ttowncompiled/angular,alxhub/angular,alexeagle/angular,mgiambalvo/angular,gkalpak/angular,aboveyou00/angular,meeroslav/angular,sjtrimble/angular,jelbourn/angular,e-hein/angular,JSMike/angular,choeller/angular,weswigham/angular,jonrimmer/angular,choeller/angular,souvikbasu/angular,laco0416/angular,zhura/angular,mprobst/angular,alexeagle/angular,jesperronn/angular,Symagic/angular,mgiambalvo/angular,cassand/angular,sjtrimble/angular,kara/angular,bkyarger/angular,jteplitz602/angular,mzgol/angular,juleskremer/angular,jasonaden/angular,jhonmike/angular,laco0416/angular,tyleranton/angular,shirish87/angular,TedSander/angular,gdi2290/angular,hankduan/angular,dmitriz/angular,mikeybyker/angular,dmitriz/angular,GistIcon/angular,AlmogShaul/angular,sjtrimble/angular,shairez/angular,trshafer/angular,TedSander/angular,panuruj/angular,itamar-Cohen/angular,dsebastien/angular,antonmoiseev/angular,tyleranton/angular,itamar-Cohen/angular,tolemac/angular,laskoviymishka/angular,hpinsley/angular,angularbrasil/angular,juleskremer/angular,mhevery/angular,robwormald/angular,mikeybyker/angular,hdeshev/angular,ocombe/angular,rjamet/angular,mgol/angular,ochafik/angular,cassand/angular,micmro/angular,zhura/angular,tycho01/angular,alxhub/angular,AlmogShaul/angular,weswigham/angular,rbevers/angular,StephenFluin/angular,rbevers/angular,trshafer/angular,micmro/angular,awerlang/angular,AlmogShaul/angular,dejour/angular,angularbrasil/angular,tamascsaba/angular,antonmoiseev/angular,ultrasonicsoft/angular,shirish87/angular,erictsangx/angular,LucasSloan/angular,SekibOmazic/angular,cironunes/angular,aaron-goshine/angular,JiaLiPassion/angular,yjbanov/angular,mhevery/angular,ultrasonicsoft/angular,dmitriz/angular,ttowncompiled/angular,mdegoo/angular,cironunes/angular,mhegazy/angular,JiaLiPassion/angular,hansl/angular,aaron-goshine/angular,mhegazy/angular,nosovk/angular,jteplitz602/angular,robwormald/angular,tbosch/angular,kevinmerckx/angular,tapas4java/angular,smartm0use/angular,cyrilgandon/angular,mikeybyker/angular,blesh/angular,hdeshev/angular,Mathou54/angular,royling/angular,aaron-goshine/angular,sarunint/angular,tolemac/angular,Symagic/angular,awerlang/angular,hankduan/angular,tapas4java/angular,hterkelsen/angular,erictsangx/angular,huoxudong125/angular,tamascsaba/angular,tbosch/angular,vinagreti/angular,graveto/angular,tyleranton/angular,ScottSWu/angular,hansl/angular,mhevery/angular,NathanWalker/angular,robwormald/angular,erictsangx/angular,vicb/angular,dsebastien/angular,dydek/angular,naomiblack/angular,sjtrimble/angular,shairez/angular,cironunes/angular,Tragetaschen/angular,awerlang/angular,vikerman/angular,IgorMinar/angular,NathanWalker/angular,youdz/angular,hdeshev/angular,alexcastillo/angular,mzgol/angular,cyrilgandon/angular,kwalrath/angular,laco0416/angular,shuhei/angular,tycho01/angular,graveto/angular,gdi2290/angular,vikerman/angular,hpinsley/angular,e-hein/angular,JSMike/angular,chuckjaz/angular,pkozlowski-opensource/angular,alxhub/angular,vamsivarikuti/angular,jasonaden/angular,willseeyou/angular,robwormald/angular,youdz/angular,markharding/angular,alexcastillo/angular,gilamran/angular,matsko/angular,epotvin/angular