Merging 7.x-4.x changes back.

Trying to get to a point where 7.x-4.x are the same. Its imposible to
now to rebase because I'm just getting to know git now :)

commit c33ad4f2
Author: Matthias Glastra <matglas.git@gmail.com>
Date:   Thu Nov 3 13:50:23 2011 +0100

    Adding language support through ui_language on global settings.

commit e2edbe12
Author: Matthias Glastra <matglas.git@gmail.com>
Date:   Thu Nov 3 17:58:52 2011 +0100

    Issue #1324464 by sillygwailo: Fixed Toolbox doesn't show when set to asynchronous mode.

    There was the problem that addthis.init() was called before the file was loaded. Now
    the function is called inside the callback of script loaded.