Move some code from the object model to Utils.

We need that in other models like the signal history one.
Improved QMetaMethod display, includes argument names and return type now.

Requires some extension on the method model though to prevent the return
types from messing up alphabetical sorting.
Display QMatrix4x4, needed in the QQ2 scene graph browser for example.
Initial QTranslator support
Rename some things. Put everything in GammaRay::
Create a real model for the translators instead of a proxy model
Hide the TranslatorWrapper from the user
Automatically copy the test .qm file to the binary directory
Add a "catch all" translator
Fix a couple of warnings
Remove a Q_DECLARE_METATYPE and remove the wrapper when the translator is deleted
A few minor changes