remove deprecated symmetry option
port twisted's deprecation library
let gridplots with hover tools function at all
Add slick-grid 2.1.0
Convert SlickGrid to an AMD module
Add SlickGrid and jquery.event to dependencies
Add stub for SlickGrid widget
Merge remote-tracking branch 'origin/master' into mattpap/grid
merge master
figure returns plot, most tests and examples pass
More systematic approach to tool validation

This employs similar technique to what HasProps.__setattr__() uses.
Merge remote-tracking branch 'origin/master' into mattpap/tools_help

Conflicts:
	bokeh/plotting_helpers.py
Simplify _plot_from_string() by setting 'plot' afterwards
Sort tools and attributes to get consistent help results
Fix computation of repeated tools and do it only once
Rename p to plot in _new_xy_plot()
Remove output from examples/plotting/notebook/bollinger
Merge remote-tracking branch 'origin/master' into mattpap/grid
Remove HandsonTable and DataTable widgets
Use DataTable instead of HandsonTable in examples