Material slot reorder https://developer.blender.org/T43235
This Diff implements the Material Slot reorder.
This Diff is a WIP and it probably needs a lot of rework, however i'd like to get some feedback
before i continue on it.
Note: I started with Severin's initial patch P193
There i added support for Materials assigned to Objects and materials assigned to Data
Then finally i added the material assignment swapping for Mesh, Nurbs and Fonts.
I tested the Diff for Mesh objects and there it seems to work nicely.
So for Mesh objects now changing the material order will preserve the material assignments.
Any feedback appreciated.
Reviewers: Severin, campbellbarton
Maniphest Tasks: T43235
Differential Revision: https://developer.blender.org/D1262