OpenEditorAction: Use filename as suffix
OpenEditorAction: Use filename as suffix

This allows the editor to use syntax highlighting depending on file
ending.

Fixes: https://github.com/coala-analyzer/coala/issues/244

saurabhiiit/coala,karansingh1559/coala,djkonro/coala,NalinG/coala,sils1297/coala,coala/coala,saurabhiiit/coala,sophiavanvalkenburg/coala,netman92/coala,Tanmay28/coala,shreyans800755/coala,yland/coala,damngamerz/coala,sagark123/coala,Uran198/coala,SambitAcharya/coala,tushar-rishav/coala,CruiseDevice/coala,NiklasMM/coala,arush0311/coala,RJ722/coala,lonewolf07/coala,lonewolf07/coala,stevemontana1980/coala,SanketDG/coala,meetmangukiya/coala,yland/coala,NalinG/coala,arush0311/coala,stevemontana1980/coala,abhiroyg/coala,rimacone/testing2,svsn2117/coala,tltuan/coala,scriptnull/coala,NalinG/coala,vinc456/coala,andreimacavei/coala,SambitAcharya/coala,MattAllmendinger/coala,coala-analyzer/coala,sudheesh001/coala,AdeshAtole/coala,Shade5/coala,nemaniarjun/coala,Tanmay28/coala,CruiseDevice/coala,sils1297/coala,arafsheikh/coala,d6e/coala,dagdaggo/coala,saurabhiiit/coala,arjunsinghy96/coala,RJ722/coala,SambitAcharya/coala,Uran198/coala,FeodorFitsner/coala,aptrishu/coala,arjunsinghy96/coala,stevemontana1980/coala,SanketDG/coala,MariosPanag/coala,meetmangukiya/coala,d6e/coala,damngamerz/coala,coala/coala,arafsheikh/coala,mr-karan/coala,scriptnull/coala,scriptnull/coala,ManjiriBirajdar/coala,swatilodha/coala,Nosferatul/coala,sudheesh001/coala,impmihai/coala,yland/coala,karansingh1559/coala,sophiavanvalkenburg/coala,aptrishu/coala,andreimacavei/coala,vinc456/coala,Asnelchristian/coala,aptrishu/coala,Nosferatul/coala,impmihai/coala,Balaji2198/coala,karansingh1559/coala,AbdealiJK/coala,Tanmay28/coala,Asalle/coala,tltuan/coala,FeodorFitsner/coala,tushar-rishav/coala,SambitAcharya/coala,RJ722/coala,JohnS-01/coala,yashLadha/coala,Tanmay28/coala,FeodorFitsner/coala,Asalle/coala,kartikeys98/coala,svsn2117/coala,mr-karan/coala,NiklasMM/coala,coala-analyzer/coala,tltuan/coala,tushar-rishav/coala,AdeshAtole/coala,Tanmay28/coala,Asalle/coala,Shade5/coala,dagdaggo/coala,Balaji2198/coala,Asnelchristian/coala,CruiseDevice/coala,Shade5/coala,shreyans800755/coala,vinc456/coala,coala/coala,sagark123/coala,AdeshAtole/coala,coala-analyzer/coala,ayushin78/coala,Nosferatul/coala,Asnelchristian/coala,jayvdb/coala,sils1297/coala,netman92/coala,Balaji2198/coala,ayushin78/coala,scriptnull/coala,incorrectusername/coala,djkonro/coala,djkonro/coala,NalinG/coala,NalinG/coala,mr-karan/coala,scriptnull/coala,impmihai/coala,arush0311/coala,refeed/coala,lonewolf07/coala,yashLadha/coala,dagdaggo/coala,damngamerz/coala,andreimacavei/coala,svsn2117/coala,scottbelden/coala,SanketDG/coala,yashtrivedi96/coala,sagark123/coala,AbdealiJK/coala,MariosPanag/coala,arjunsinghy96/coala,MariosPanag/coala,swatilodha/coala,sophiavanvalkenburg/coala,MattAllmendinger/coala,abhiroyg/coala,yashLadha/coala,incorrectusername/coala,jayvdb/coala,scottbelden/coala,yashtrivedi96/coala,kartikeys98/coala,sudheesh001/coala,NalinG/coala,JohnS-01/coala,Tanmay28/coala,nemaniarjun/coala,meetmangukiya/coala,abhiroyg/coala,Tanmay28/coala,scriptnull/coala,refeed/coala,SambitAcharya/coala,SambitAcharya/coala,scriptnull/coala,ManjiriBirajdar/coala,NiklasMM/coala,Tanmay28/coala,netman92/coala,Uran198/coala,SambitAcharya/coala,rimacone/testing2,yashtrivedi96/coala,nemaniarjun/coala,rresol/coala,MattAllmendinger/coala,rresol/coala,shreyans800755/coala,d6e/coala,NalinG/coala,ayushin78/coala,jayvdb/coala,AbdealiJK/coala,scottbelden/coala,incorrectusername/coala,refeed/coala,JohnS-01/coala,swatilodha/coala,rimacone/testing2,arafsheikh/coala,ManjiriBirajdar/coala,rresol/coala,kartikeys98/coala