Made the navbar collapsed by default in portrait orientation.
Made the navbar always expanded in landscape orientation.
Made Logout dialog box bigger in portrait orientation and made it hidden on window resize.
Unfocused some buttons after click event is triggered.
Corrected the title of Collapse button's tooltip.
Made the whiteboard use space more effectively in portrait orientation.
Merge branch 'testing-version-008' of https://github.com/antobinary/bigbluebutton into meteor-client-responsive-ui
Merge branch 'meteor-client-responsive-ui' of github.com:gthacoder/bigbluebutton into testing-version-008