Squashed 'bundle/virtualclass/' changes from 284aa2c..fd5676f

fd5676f compresed chat js files into file web.min.js
06933c5 update src file
fb64061 updated mini file
6bf8b15 added chrome extension with it's validation
5caeac6 updated min file
f523fe6 worked on resize issue and fixed the display video late at very first
261594b updated mini file
5864a16 fixed the bug 'disable the canvas when page is being refreshed'
ff79125 updated file
730ef7c updated mini file
6ed5894 identify teacher on footer and completed the session work

git-subtree-dir: bundle/virtualclass
git-subtree-split: fd5676ff2c5b45cc7271da2d4273d27cd1d3f1d6
Merge commit '48047071c0fb2792f41f401ed1627caff9ea6071'
have fixed some bug