SHIDNIG-805 Revive ConfigContributors and also inject javascript config for container js

[Paul Lindner, 2010-06-10 22:34:58]

This is a bit intrusive, so I hope someone can take a look at this patch.

Something that's bothering me is there are cases where the gadgets.config key
doesn't match the feature name and also doesn't match the javascript namespace. 
Ideally they would all be the same to eliminate confusion.  

In this patch core.auth moves to shindig.auth uses the correct gadgets.config
key.  I went part of the way and moved xhrwrapper around, but it's still
inconsistent.  And don't get started on osapi.services, I haven't moved that
over either..