Fix #819: Improve docs about ID/name to names/titles mapping
Fix #819: Improve docs about ID/name to names/titles mapping

saimn/astropy,tbabej/astropy,AustereCuriosity/astropy,AustereCuriosity/astropy,funbaker/astropy,dhomeier/astropy,AustereCuriosity/astropy,AustereCuriosity/astropy,joergdietrich/astropy,bsipocz/astropy,kelle/astropy,larrybradley/astropy,mhvk/astropy,astropy/astropy,larrybradley/astropy,saimn/astropy,stargaser/astropy,lpsinger/astropy,funbaker/astropy,tbabej/astropy,stargaser/astropy,funbaker/astropy,funbaker/astropy,stargaser/astropy,astropy/astropy,dhomeier/astropy,StuartLittlefair/astropy,StuartLittlefair/astropy,kelle/astropy,kelle/astropy,dhomeier/astropy,kelle/astropy,kelle/astropy,larrybradley/astropy,bsipocz/astropy,tbabej/astropy,stargaser/astropy,mhvk/astropy,pllim/astropy,dhomeier/astropy,larrybradley/astropy,MSeifert04/astropy,aleksandr-bakanov/astropy,aleksandr-bakanov/astropy,saimn/astropy,tbabej/astropy,bsipocz/astropy,pllim/astropy,DougBurke/astropy,StuartLittlefair/astropy,joergdietrich/astropy,larrybradley/astropy,tbabej/astropy,aleksandr-bakanov/astropy,dhomeier/astropy,joergdietrich/astropy,mhvk/astropy,StuartLittlefair/astropy,MSeifert04/astropy,pllim/astropy,mhvk/astropy,MSeifert04/astropy,joergdietrich/astropy,astropy/astropy,saimn/astropy,astropy/astropy,bsipocz/astropy,lpsinger/astropy,saimn/astropy,DougBurke/astropy,MSeifert04/astropy,mhvk/astropy,DougBurke/astropy,astropy/astropy,DougBurke/astropy,pllim/astropy,pllim/astropy,aleksandr-bakanov/astropy,lpsinger/astropy,lpsinger/astropy,joergdietrich/astropy,StuartLittlefair/astropy,AustereCuriosity/astropy,lpsinger/astropy