chmod
Merge remote-tracking branch 'upstream/master'
Gap-filling.
Gap fill for dynamic graph (gap fill generator).
Test case for not-fully-implemented method (gap fill by gage subsets of
row tuples)
Gaps filled for dynamic plot data, too.
Merge pull request #20 from rhayes-cida/master

Gaps filled
Add USGS logo image (may want to make this optional).
Progress on NAVD29 for static graph -- vertical axis looks good, but
need to repair horizontal axis.
NAVD29 works on static graph.
Clean up API for 1-gage png generation.
Merge pull request #21 from rhayes-cida/master

NAVD29 axis on static graph
Merge remote-tracking branch 'usgs_upstream/master'

Conflicts:
	dj_eden_app/hydrograph.py
	dj_eden_app/stage_data.py
	dj_eden_app/views/data_views.py
NGVD29 axis on dygraphs. Problems with PIL on Windows.