make addons blender versions consistent

from Sebastian Nell (codemanx)

Various fixes to UI messages (among other things, all messages needed it should now be capitalized).

indentation edits and copy pyrimid from contrib (where I had made some edits), removed so this wont happen again.

Beware: in mocap/__init__.py there was a very long bl_label (> 100 chars), which was troncated in UI (at least, _update_msg.py produced a troncated msgid for it). That should be avoided, imho!

* You only have to do layout.prop if you want 1 property, no need for row then!
* Use col, row, sub as variable names, not colsub, rowsub, row2 etc please.
* Povray Addon: Still used a lot of splits, you need no split when you only have 1 column! 

thanks to Benjy Cook
well done!