Add new tool: "Overlap UV Faces"

git-svn-id: https://svn.blender.org/svnroot/bf-extensions/contrib@4452 96b784f8-4ae3-dd11-aff7-0030488c597c
Cleanup

git-svn-id: https://svn.blender.org/svnroot/bf-extensions/contrib@4453 96b784f8-4ae3-dd11-aff7-0030488c597c