Blender Git Loki

Theme: match outliner/properties colors with modes in viewport.

Helps to:
* Make a connection between what we see in Outliner, Viewport and Properties editor
(clicking on the obdata icon takes us to Edit mode, which shares colors).
* Quickly tell which mode we are in.
* Armatures have now distinct color when in Object, Edit, and Pose modes.

Missing is Pose mode which is currently cyan in the viewport and obdata category in properties,
it would probably need its own special category though as it doesn't match the others.