Havok enhancements (Initial)

'H' toggle, third display mode (Solid), fixed convex hull
Fix aDrawHavok signal

Activated was giving a warning.  I had no reason to use it over
triggered().
BSBound larger line width for select mode

BSBound was too hard to click in render view to select the associated
node.
Update NifSkope_fr.ts

Improved french translation
Merge branch 'feature/havok-usability' of https://github.com/jonwd7/nifskope into bleeding-edge