Also dropped the minimum height restriction

... and remove dragresize stuff from the mockup

Conflicts:
	bower.json
	tests_main.js

Conflicts:
	converse.js
	docs/CHANGES.rst
	index.html

Hebrew translation update

Removed dragresize.js and instead wrote new much smaller and simpler code
in converse.js.

Fix minor typing errors

Conflicts:
	converse.js

Fixes #102

to avoid having to give pass it a callback method

I couldn't get it to work. Suspect that a new session needs to be
created/authenticated instead of attaching to the existing connection.

There is still the apparent problem that after reconnecting, event listeners
hvae to bre reregistered (which doesn't happen currently).

So messages can be sent but not received...