Fix for [#34509] minor theme panel color issue
* panelcolors.back and panelcolors.header were missing in resources.c for the 3D View. 

git-svn-id: https://svn.blender.org/svnroot/bf-blender/trunk/blender@54996 954f8c5b-7b00-dc11-b283-0030488c597c