when clicking the controlbox toggle

When the one is visible, the other is hidden and vice versa.

Conflicts:
	converse.js

- Rename some classes to make clearer.
- Fixed resizing of chat rooms.
- Changed controlbox so that only contacts are scrollable

due to new ability to resize chat boxes.

Removed unused css and html files.

Conflicts:
	converse.css
	converse.js
	mockup.html

Also, added another chatbox and fixed reflow after closing a chatbox.

add Japanese po

Option to enable toolbar call button