Added less meteor package

along with other deps update.
Initial work on responsive design for chat interface.
Add handlers to hide chat page drawers.

Hide a drawer when:
1. Room is changed (Reactive).
2. When any click is performed outside the drawer in the 'chat' template.
Make chatlogs loader responsive.
Show initial server name in navbar in mobile UI.

along with some bug fixes in setCurrentRoom function.
Merge pull request #139 from waartaa/mobileui-v1

Fixed #136: Mobileui v1