Squashed 'bundle/virtualclass/' changes from 48000fe..f618f1c

f618f1c removed comma and added mini file
8d6613c removed width and height from student.php
5e399df enable student speaker button and created the functions for appsbar
7632273 improved the design elements
6664972 updated mini file
39a0320 fixed some bugs

git-subtree-dir: bundle/virtualclass
git-subtree-split: f618f1cec49c9c39c85a369e12f5a3148b98316e
resolve conflict