Test that chatboxes are removed from localStorage when closed

Test that chatboxes can also be closed.

Check that a chatbox is created when a roster item is clicked.

Also renamed some other tests to make them shorter and more legible

They'll have to be completely rewritten since we're not using Burry.js anymore

Controlbox always appears when page loads

Controlbox didn't auto-appear when a new user made a subscription request.

Differentiate more clearly between presence type and the show element

Conflicts:
	index.html