improved dispose in WebView Clear all Events and set WebBrowser to null so the ViewModel eventually bound to it may drop the reference
improved dispose in WebView Clear all Events and set WebBrowser to null so the ViewModel eventually bound to it may drop the reference

gregmartinhtc/CefSharp,battewr/CefSharp,Octopus-ITSM/CefSharp,wangzheng888520/CefSharp,rlmcneary2/CefSharp,battewr/CefSharp,rover886/CefSharp,VioletLife/CefSharp,wangzheng888520/CefSharp,jamespearce2006/CefSharp,VioletLife/CefSharp,zhangjingpu/CefSharp,rlmcneary2/CefSharp,Octopus-ITSM/CefSharp,haozhouxu/CefSharp,NumbersInternational/CefSharp,Haraguroicha/CefSharp,ITGlobal/CefSharp,rover886/CefSharp,gregmartinhtc/CefSharp,illfang/CefSharp,NumbersInternational/CefSharp,twxstar/CefSharp,jamespearce2006/CefSharp,ITGlobal/CefSharp,illfang/CefSharp,jamespearce2006/CefSharp,twxstar/CefSharp,VioletLife/CefSharp,rlmcneary2/CefSharp,haozhouxu/CefSharp,joshvera/CefSharp,AJDev77/CefSharp,twxstar/CefSharp,NumbersInternational/CefSharp,Haraguroicha/CefSharp,battewr/CefSharp,ruisebastiao/CefSharp,twxstar/CefSharp,Haraguroicha/CefSharp,gregmartinhtc/CefSharp,ITGlobal/CefSharp,AJDev77/CefSharp,windygu/CefSharp,windygu/CefSharp,illfang/CefSharp,joshvera/CefSharp,ruisebastiao/CefSharp,rover886/CefSharp,VioletLife/CefSharp,Livit/CefSharp,ruisebastiao/CefSharp,yoder/CefSharp,rlmcneary2/CefSharp,ITGlobal/CefSharp,AJDev77/CefSharp,NumbersInternational/CefSharp,zhangjingpu/CefSharp,gregmartinhtc/CefSharp,zhangjingpu/CefSharp,yoder/CefSharp,dga711/CefSharp,windygu/CefSharp,joshvera/CefSharp,haozhouxu/CefSharp,AJDev77/CefSharp,zhangjingpu/CefSharp,rover886/CefSharp,yoder/CefSharp,Livit/CefSharp,Livit/CefSharp,wangzheng888520/CefSharp,dga711/CefSharp,Haraguroicha/CefSharp,ruisebastiao/CefSharp,battewr/CefSharp,Haraguroicha/CefSharp,wangzheng888520/CefSharp,illfang/CefSharp,dga711/CefSharp,jamespearce2006/CefSharp,haozhouxu/CefSharp,jamespearce2006/CefSharp,dga711/CefSharp,rover886/CefSharp,joshvera/CefSharp,windygu/CefSharp,Octopus-ITSM/CefSharp,Octopus-ITSM/CefSharp,yoder/CefSharp,Livit/CefSharp