Viewport: Armature Wireframe Rendering
- added back the wire frame rendering for armatures
- force armatures to be drawn in solid mode next to the bounding box when in pose or edit mode.
- disable culling for solid objects
- removed concave edge detection for outlines
I couldn't figure out what the concave edge detection was trying to do, but it didn't work correctly for negative scaled ob-matrices. Solutions I tried would almost render all the wires all the time.