[show-hint addon] Restructure
[show-hint addon] Restructure

Also makes sure that no two hinting dialogs can be active at the
same time.

Issue #1619

mizchi/CodeMirror,notepadqq/CodeMirror,increpare/CodeMirror,buchslava/CodeMirror,skylarkcob/CodeMirror,wbinnssmith/CodeMirror,hackmdio/CodeMirror,alur/CodeMirror,jessegrosjean/CodeMirror,qiankun007/CodeMirror,crazy4chrissi/CodeMirror,bgrins/CodeMirror,SidPresse/CodeMirror,djadmin/CodeMirror,crazy4chrissi/CodeMirror,wingify/CodeMirror,rrandom/CodeMirror,symbla/CodeMirror,morrisonwudi/CodeMirror,pjkui/CodeMirror,agendor/CodeMirror,michaelerobertsjr/CodeMirror,thomasjm/CodeMirror,NumbersInternational/CodeMirror,increpare/CodeMirror,KamranMackey/CodeMirror,kerabromsmu/CodeMirror,bocharsky-bw/CodeMirror,matthewbauer/CodeMirror,mightyguava/CodeMirror,bluesh55/CodeMirror,fpco/codemirror,jessegrosjean/CodeMirror,ashmind/CodeMirror,TechnicalPursuit/CodeMirror,symbla/CodeMirror,webida/CodeMirror,kangkot/CodeMirror,webida/CodeMirror,qweasd1/CodeMirror,AlanWasTaken/codemirror,melpon/CodeMirror,fmoliveira/CodeMirror,tpphu/CodeMirror,jhnesk/CodeMirror,dudb/CodeMirror,axter/CodeMirror,davidpham87/CodeMirror,supriyantomaftuh/CodeMirror,ejgallego/CodeMirror,hccampos/CodeMirror,grzegorzmazur/CodeMirror,mizchi/CodeMirror,TDaglis/CodeMirror,kangkot/CodeMirror,namin/CodeMirror,schanzer/CodeMirror,wbinnssmith/CodeMirror,Dominator008/CodeMirror,wingify/CodeMirror,kerabromsmu/CodeMirror,Jisuanke/CodeMirror,rasata/CodeMirror,DustinH/CodeMirror,notepadqq/CodeMirror,bgrins/CodeMirror,adobe/CodeMirror2,morrisonwudi/CodeMirror,hccampos/CodeMirror,bluesh55/CodeMirror,rrandom/CodeMirror,fmoliveira/CodeMirror,ThebingServices/CodeMirror,karevn/CodeMirror,hackmdio/CodeMirror,fpco/codemirror,dperetti/CodeMirror,buchslava/CodeMirror,alur/CodeMirror,schanzer/CodeMirror,antimatter15/CodeMirror,dperetti/CodeMirror,skylarkcob/CodeMirror,ficristo/CodeMirror,qweasd1/CodeMirror,NeZaMy/CodeMirror2,Aliccer/CodeMirror,michaelerobertsjr/CodeMirror,Dominator008/CodeMirror,pabloferz/CodeMirror,systay/CodeMirror,fivetran/CodeMirror,shiren/CodeMirror,djadmin/CodeMirror,ThebingServices/CodeMirror,qweasd1/CodeMirror,notepadqq/CodeMirror,happibum/CodeMirror-main,kk9599/CodeMirror,amshali/CodeMirror,pinbe/CodeMirror,dbarnett/CodeMirror,ZombieHippie/CodeMirror,loopspace/CodeMirror,kangkot/CodeMirror,jpolitz/CodeMirror,sanyaade-iot/CodeMirror,d0liver/CodeMirror,sekcheong/CodeMirror,kevinushey/CodeMirror,philuchansky/CodeMirror,karevn/CodeMirror,belph/CodeMirror,EasonYi/CodeMirror,ssxxue/CodeMirror,InternetGuru/CodeMirror,Dominator008/CodeMirror,Icenium/CodeMirror,cintiamh/CodeMirror,TDaglis/CodeMirror,loopspace/CodeMirror,crazy4chrissi/CodeMirror,TechnicalPursuit/CodeMirror,cintiamh/CodeMirror,sourcelair/CodeMirror,gkoberger/CodeMirror,EasonYi/CodeMirror,webida/CodeMirror,rasata/CodeMirror,ksanaforge/CodeMirror,DustinH/CodeMirror,dbarnett/CodeMirror,belph/CodeMirror,matthewbauer/CodeMirror,rustemferreira/CodeMirror,InternetGuru/CodeMirror,jhnesk/CodeMirror,hccampos/CodeMirror,shiren/CodeMirror,dudb/CodeMirror,kk9599/CodeMirror,ssxxue/CodeMirror,codio/CodeMirror,camellhf/CodeMirror,pabloferz/CodeMirror,d0liver/CodeMirror,CartoDB/CodeMirror,nawroth/CodeMirror,ZombieHippie/CodeMirror,SidPresse/CodeMirror,Allenice/CodeMirror,karevn/CodeMirror,nawroth/CodeMirror,jkaplon/CodeMirror,bocharsky-bw/CodeMirror,joshterrell805-historic/CodeMirror,angelozerr/CodeMirror,skylarkcob/CodeMirror,nightwing/CodeMirror,flyskyko/CodeMirror,bfrohs/CodeMirror,grzegorzmazur/CodeMirror,mihailik/CodeMirror,belph/CodeMirror,INTELOGIE/CodeMirror,Allenice/CodeMirror,sanyaade-iot/CodeMirror,isdampe/CodeMirror,elisee/CodeMirror,karthikeyansam/CodeMirror,isdampe/CodeMirror,adobe/CodeMirror2,nightwing/CodeMirror,Aliccer/CodeMirror,Navaneethsen/CodeMirror,MarcelGerber/CodeMirror,ejgallego/CodeMirror,vincentwoo/CodeMirror,davidpham87/CodeMirror,SidPresse/CodeMirror,pinbe/CodeMirror,kolya-ay/CodeMirror,TechnicalPursuit/CodeMirror,tpphu/CodeMirror,pjkui/CodeMirror,shiren/CodeMirror,apatawari/CodeMirror,namin/CodeMirror,apatawari/CodeMirror,MarcelGerber/CodeMirror,bluesh55/CodeMirror,manderson23/CodeMirror,NeZaMy/CodeMirror2,kuangyeheng/CodeMirror,melpon/CodeMirror,vanloswang/CodeMirror,jpolitz/CodeMirror,kerabromsmu/CodeMirror,ejgallego/CodeMirror,kk9599/CodeMirror,matthewbauer/CodeMirror,apatawari/CodeMirror,kolya-ay/CodeMirror,gkoberger/CodeMirror,supriyantomaftuh/CodeMirror,amshali/CodeMirror,antimatter15/CodeMirror,dudb/CodeMirror,mihailik/CodeMirror,r7kamura/CodeMirror,sgoo/CodeMirror,Allenice/CodeMirror,trumanliu/CodeMirror,mihailik/CodeMirror,isdampe/CodeMirror,elisee/CodeMirror,codio/CodeMirror,pjkui/CodeMirror,anthonygego/CodeMirror,manderson23/CodeMirror,anthonygego/CodeMirror,r7kamura/CodeMirror,philuchansky/CodeMirror,pinbe/CodeMirror,ficristo/CodeMirror,kuangyeheng/CodeMirror,abdelouahabb/CodeMirror,grzegorzmazur/CodeMirror,EasonYi/CodeMirror,amsul/CodeMirror,symbla/CodeMirror,nightwing/CodeMirror,thomasjm/CodeMirror,melpon/CodeMirror,systay/CodeMirror,bocharsky-bw/CodeMirror,Icenium/CodeMirror,tpphu/CodeMirror,dbarnett/CodeMirror,qiankun007/CodeMirror,amshali/CodeMirror,elisee/CodeMirror,rasata/CodeMirror,xeronith/CodeMirror,CartoDB/CodeMirror,GerHobbelt/CodeMirror2,rrandom/CodeMirror,Icenium/CodeMirror,ashmind/CodeMirror,systay/CodeMirror,vincentwoo/CodeMirror,Navaneethsen/CodeMirror,d0liver/CodeMirror,axter/CodeMirror,gkoberger/CodeMirror,karthikeyansam/CodeMirror,thomasjm/CodeMirror,sekcheong/CodeMirror,sekcheong/CodeMirror,vincentwoo/CodeMirror,rustemferreira/CodeMirror,Jisuanke/CodeMirror,ssxxue/CodeMirror,jochenberger/CodeMirror,KamranMackey/CodeMirror,trumanliu/CodeMirror,ficristo/CodeMirror,mightyguava/CodeMirror,bfrohs/CodeMirror,rustemferreira/CodeMirror,cben/CodeMirror,jochenberger/CodeMirror,jkaplon/CodeMirror,djadmin/CodeMirror,davidpham87/CodeMirror,buchslava/CodeMirror,sourcelair/CodeMirror,sourcelair/CodeMirror,AlanWasTaken/codemirror,philuchansky/CodeMirror,anthonygego/CodeMirror,ashmind/CodeMirror,INTELOGIE/CodeMirror,pabloferz/CodeMirror,fmoliveira/CodeMirror,morrisonwudi/CodeMirror,adobe/CodeMirror2,Jisuanke/CodeMirror,amsul/CodeMirror,manderson23/CodeMirror,camellhf/CodeMirror,NumbersInternational/CodeMirror,Aliccer/CodeMirror,kuangyeheng/CodeMirror,angelozerr/CodeMirror,hackmdio/CodeMirror,MarcelGerber/CodeMirror,sgoo/CodeMirror,supriyantomaftuh/CodeMirror,NeZaMy/CodeMirror2,codio/CodeMirror,happibum/CodeMirror-main,abdelouahabb/CodeMirror,mizchi/CodeMirror,increpare/CodeMirror,schanzer/CodeMirror,joshterrell805-historic/CodeMirror,Carreau/CodeMirror,ksanaforge/CodeMirror,jayaprabhakar/CodeMirror,Ermlab/CodeMirror,wingify/CodeMirror,Carreau/CodeMirror,loopspace/CodeMirror,xeronith/CodeMirror,jayaprabhakar/CodeMirror,cintiamh/CodeMirror,flyskyko/CodeMirror,r7kamura/CodeMirror,xeronith/CodeMirror,ThebingServices/CodeMirror,INTELOGIE/CodeMirror,agendor/CodeMirror,DustinH/CodeMirror,vanloswang/CodeMirror,GerHobbelt/CodeMirror2,antimatter15/CodeMirror,TDaglis/CodeMirror,bgrins/CodeMirror,vanloswang/CodeMirror,InternetGuru/CodeMirror,ZombieHippie/CodeMirror,agendor/CodeMirror,Navaneethsen/CodeMirror,michaelerobertsjr/CodeMirror,flyskyko/CodeMirror,fivetran/CodeMirror,happibum/CodeMirror-main,KamranMackey/CodeMirror,alur/CodeMirror,qiankun007/CodeMirror,jessegrosjean/CodeMirror,cben/CodeMirror,namin/CodeMirror,webida/CodeMirror,trumanliu/CodeMirror,camellhf/CodeMirror,karthikeyansam/CodeMirror,abdelouahabb/CodeMirror,Ermlab/CodeMirror,nawroth/CodeMirror,kevinushey/CodeMirror,jkaplon/CodeMirror,AlanWasTaken/codemirror,jayaprabhakar/CodeMirror,jpolitz/CodeMirror,NumbersInternational/CodeMirror,mightyguava/CodeMirror,bfrohs/CodeMirror,mtaran-google/CodeMirror,axter/CodeMirror,ksanaforge/CodeMirror,mtaran-google/CodeMirror,mtaran-google/CodeMirror,dperetti/CodeMirror,sanyaade-iot/CodeMirror