[javascript mode] Recognize regexp after case and new keywords
[javascript mode] Recognize regexp after case and new keywords

Closes ##3648

grzegorzmazur/CodeMirror,notepadqq/CodeMirror,namin/CodeMirror,ThebingServices/CodeMirror,rrandom/CodeMirror,kerabromsmu/CodeMirror,ThebingServices/CodeMirror,wingify/CodeMirror,wingify/CodeMirror,antimatter15/CodeMirror,codio/CodeMirror,antimatter15/CodeMirror,mizchi/CodeMirror,InternetGuru/CodeMirror,thomasjm/CodeMirror,ejgallego/CodeMirror,Dominator008/CodeMirror,jkaplon/CodeMirror,mizchi/CodeMirror,agendor/CodeMirror,nightwing/CodeMirror,Jisuanke/CodeMirror,jkaplon/CodeMirror,bfrohs/CodeMirror,thomasjm/CodeMirror,vincentwoo/CodeMirror,hccampos/CodeMirror,rrandom/CodeMirror,jayaprabhakar/CodeMirror,Jisuanke/CodeMirror,ficristo/CodeMirror,pabloferz/CodeMirror,MarcelGerber/CodeMirror,adobe/CodeMirror2,ashmind/CodeMirror,InternetGuru/CodeMirror,ejgallego/CodeMirror,dperetti/CodeMirror,INTELOGIE/CodeMirror,xeronith/CodeMirror,ashmind/CodeMirror,hccampos/CodeMirror,sourcelair/CodeMirror,dperetti/CodeMirror,alur/CodeMirror,xeronith/CodeMirror,pabloferz/CodeMirror,mihailik/CodeMirror,ThebingServices/CodeMirror,hackmdio/CodeMirror,schanzer/CodeMirror,jkaplon/CodeMirror,ZombieHippie/CodeMirror,jayaprabhakar/CodeMirror,alur/CodeMirror,hackmdio/CodeMirror,InternetGuru/CodeMirror,kerabromsmu/CodeMirror,Dominator008/CodeMirror,Jisuanke/CodeMirror,notepadqq/CodeMirror,alur/CodeMirror,agendor/CodeMirror,kerabromsmu/CodeMirror,codio/CodeMirror,SidPresse/CodeMirror,wingify/CodeMirror,sourcelair/CodeMirror,vincentwoo/CodeMirror,vincentwoo/CodeMirror,mtaran-google/CodeMirror,SidPresse/CodeMirror,ficristo/CodeMirror,antimatter15/CodeMirror,crazy4chrissi/CodeMirror,codio/CodeMirror,schanzer/CodeMirror,thomasjm/CodeMirror,mizchi/CodeMirror,ZombieHippie/CodeMirror,adobe/CodeMirror2,SidPresse/CodeMirror,ashmind/CodeMirror,nightwing/CodeMirror,nightwing/CodeMirror,ficristo/CodeMirror,mtaran-google/CodeMirror,crazy4chrissi/CodeMirror,agendor/CodeMirror,ZombieHippie/CodeMirror,MarcelGerber/CodeMirror,INTELOGIE/CodeMirror,schanzer/CodeMirror,bfrohs/CodeMirror,TDaglis/CodeMirror,MarcelGerber/CodeMirror,dperetti/CodeMirror,TDaglis/CodeMirror,crazy4chrissi/CodeMirror,grzegorzmazur/CodeMirror,bfrohs/CodeMirror,mihailik/CodeMirror,grzegorzmazur/CodeMirror,pabloferz/CodeMirror,Dominator008/CodeMirror,xeronith/CodeMirror,TDaglis/CodeMirror,hackmdio/CodeMirror,namin/CodeMirror,mihailik/CodeMirror,ejgallego/CodeMirror,hccampos/CodeMirror,mtaran-google/CodeMirror,namin/CodeMirror,INTELOGIE/CodeMirror,adobe/CodeMirror2,rrandom/CodeMirror,jayaprabhakar/CodeMirror,notepadqq/CodeMirror,sourcelair/CodeMirror