[Bf-funboard] 2-axis manipulator designs...

[David Jeske]

@W. Nelson - are you thinkiong of Vino? He was a 2012 GSOC participant who
checked a 2-axis manipulator into the Bratwurst branch... You can test it
out in this binary build...

http://graphicall.org/?keywords=Bratwurst

I like the hover-feedback in Vino's code. I think it would be reasonable to
merge his 2-axis scale and hover-feedback -- and possibly use Neal's
visual. I don't think we should use Vino's 2-axis translate as-is, because
it makes the hit-target for axis-translate really small and that is the
common operation.

Vino has a bunch of other UI experiments in there too. You can sort of
figure it out by piecing through this stuff...

http://blenderartists.org/forum/showthread.php?255753-GSoC-User-Interface-Tasklist
http://wiki.blender.org/index.php/User:Vino/GSoC_2012
http://wiki.blender.org/index.php/User:Vino/New_User_Experience

I'd like to revive Vino's code for UI panel drag-collapse but in a
different way than he used it. I just want to turn it on when actually
initiating a drag-split, so the drag-split H, drag-split V, and
drag-collapse operations all become one continuous thing, instead of the
current situation where once it splits you are stuck with the split.