now dragging an image onto an empty can be done without holding Ctrl.
Make it set the empty draw type for existing empty object.
change from yakca on IRC

also some whitespace cleanup.


git-svn-id: https://svn.blender.org/svnroot/bf-blender/trunk/blender@54967 954f8c5b-7b00-dc11-b283-0030488c597c