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fix draw_idle reference in  NavigationToolbar2

NavigationToolbar2 sub-classes do not (all?) have a draw_idle method (strictly speaking, the QT one does not).  I assume this should have bounce strait to the canvas, not through the `NavigationToolbar2.draw()` method.

Change introduced in 25ff2f70764b71c7126929e0ef08e7b18c42a0d4
mpl_interface.js template does not need to be parameterized on the figure number
Make the WebAgg backend work with the IPython notebook
Add ipython_inline_figure.html
Fix the onload callback as found by @andreabedini in #2310
Use IPython.display.display_html as suggested by @andreabedini
Don't use tornado template class directly, as suggested by @andreabedini
PEP8 fixes
Fix accidental merge
pep8 fixes
made example clearer
 - use OO interface to set tick labels rather than pyplot
 - explicitly set ax2.ylim, rather than relying on auto-scale magic
Merge pull request #2325 from matthew-brett/deal-with-broken-qt4

BF: guard against broken PyQt import
Merge pull request #2316 from vbr/patch-6

Replace the obsolete wx.PySimpleApp
Fix bug in texmanager font-family parsing
Merge pull request #2306 from lpsinger/mollweide_latitude_grid

Mollweide latitude grid
Fix accidental merge
Use macroman rather than ascii to decode SFNT table names
Merge pull request #2307 from mdboom/font-name-decoding

font_manager.py UnicodeDecodeError when starting ipython --pylab
Merge pull request #2345 from mdboom/texmanager-family-crash

texmanager font selection crashes