Fix for preventing multiple deregister of functions
Merge branch 'master' of git@github.com:Dexels/navajo.git
Added library
Update osgi config. Note that it isn't 'right' yet:

 - In OSGi, all twitter specific dependencies are embedded in the bundle, which is not optimal.
 - In Non-OSGi, all dependencies need to be supplied anyway.

So to fix this, I'll need to create a bundle of jtwitter, and perhaps also signpost. Todo.
Build fix
Release of com.dexels.navajo.twitter version 1.0.12
Development stream of com.dexels.navajo.twitter version 1.0.13