WIP: resizing columns
Move resizer directive to right directory
Show resizer overlay; move along with mouse
WIP: resize columns
Column resizing works
WIP: column resizing
WIP: column resizing

Had to alter style computation so they can specify a priority. Also added
a refresh function to the resizer that forces a scroll event so we don't
run into a weird issue where the scrollbar is extending beyond the
viewport and causing offsets between the header canvas scrollLeft and body
canvas scrollLeft.

Right now the offsets don't occur but the horizontal scrollbar DOES extend
3px beyond the right viewport if you scroll all the way to the right and
then resize a column smaller than it was.  Need to fix that.
WIP: trying to get horiz. scrollbar to move into the right place, post column resize
Fix: horiz. scrollbar updates correctly on column resize
Fix: elmMaxBound() and getElmSize() being stored on 'this' in link() was a terrible idea, and broken
Turn off building 3.0 feature branches
WIP: moving resize-columns to feature module
Moving column resizing to feature module
Fix horizontal scrolling
WIP: adding unit tests for resizing columns
WIP: test specs running for resizeColums; need more
WIP: adding unit tests for column resizing
WIP: adding unit tests for column resizing
Fix: was using renderIndex not  for column style
Tests for column resizing complete

Had to add the compiled css file as a testing dependency. It's required
for the grid to be rendered correctly.

Also added jquery.simulate.js for mouse event simulation.