Fixed: CPPopover not closing in some browsers
Fixed: CPPopover not closing in some browsers

In browsers without support for _DOMElement.removeEventListener CPPopover
throws an exception when closing, and the popover is not removed. This fix
checks for support implicitly using the _browserAnimates variable.

rgv151/cappuccino,primalmotion/cappuccino,FrankReh/cappuccino,rgv151/cappuccino,cacaodev/cappuccino,zittix/cappuccino,primalmotion/cappuccino,kidaa/cappuccino,Rosch/cappuccino,primalmotion/cappuccino,primalmotion/cappuccino,AlexanderMazaletskiy/cappuccino,cacaodev/cappuccino,krodelin/cappuccino,cappuccino/cappuccino,cappuccino/cappuccino,wangshijin/cappuccino,deltaprojects/cappuccino,kidaa/cappuccino,mrcarlberg/cappuccino,Rosch/cappuccino,cacaodev/cappuccino,Dogild/cappuccino,primalmotion/cappuccino,wangshijin/cappuccino,krodelin/cappuccino,daboe01/cappuccino,mrcarlberg/cappuccino,cacaodev/cappuccino,daboe01/cappuccino,rgv151/cappuccino,FrankReh/cappuccino,cappuccino/cappuccino,Dogild/cappuccino,mrcarlberg/cappuccino,deltaprojects/cappuccino,zittix/cappuccino,wangshijin/cappuccino,Dogild/cappuccino,koamac/Cappuccino,cacaodev/cappuccino,rgv151/cappuccino,kidaa/cappuccino,Rosch/cappuccino,cacaodev/cappuccino,koamac/Cappuccino,zittix/cappuccino,FrankReh/cappuccino,mrcarlberg/cappuccino,rgv151/cappuccino,cappuccino/cappuccino,daboe01/cappuccino,wangshijin/cappuccino,AlexanderMazaletskiy/cappuccino,mrcarlberg/cappuccino,FrankReh/cappuccino,deltaprojects/cappuccino,wangshijin/cappuccino,daboe01/cappuccino,deltaprojects/cappuccino,cappuccino/cappuccino,deltaprojects/cappuccino,deltaprojects/cappuccino,daboe01/cappuccino,Dogild/cappuccino,Rosch/cappuccino,kidaa/cappuccino,zittix/cappuccino,AlexanderMazaletskiy/cappuccino,krodelin/cappuccino,enquora/cappuccino,rgv151/cappuccino,zittix/cappuccino,AlexanderMazaletskiy/cappuccino,krodelin/cappuccino,krodelin/cappuccino,deltaprojects/cappuccino,zittix/cappuccino,Dogild/cappuccino,mrcarlberg/cappuccino,enquora/cappuccino,cappuccino/cappuccino,FrankReh/cappuccino,kidaa/cappuccino,kidaa/cappuccino,cacaodev/cappuccino,mrcarlberg/cappuccino,FrankReh/cappuccino,krodelin/cappuccino,AlexanderMazaletskiy/cappuccino,zittix/cappuccino,enquora/cappuccino,tancred/cappuccino,tancred/cappuccino,rgv151/cappuccino,koamac/Cappuccino,Rosch/cappuccino,enquora/cappuccino,daboe01/cappuccino,tancred/cappuccino,enquora/cappuccino,FrankReh/cappuccino,Rosch/cappuccino,cappuccino/cappuccino,Dogild/cappuccino,daboe01/cappuccino,enquora/cappuccino,koamac/Cappuccino,koamac/Cappuccino,tancred/cappuccino,enquora/cappuccino,Rosch/cappuccino,primalmotion/cappuccino,koamac/Cappuccino,krodelin/cappuccino,tancred/cappuccino,primalmotion/cappuccino,tancred/cappuccino,AlexanderMazaletskiy/cappuccino,wangshijin/cappuccino,Dogild/cappuccino,mrcarlberg/cappuccino,FrankReh/cappuccino