Fix context menu select-all in IE9+
Fix context menu select-all in IE9+

Closes #1522

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