removed datetimefield
Merge remote-tracking branch 'usgs_upstream/master'
minor javascript changes to hydrograph_query.html
added tight_layout() to single matplotlib so x-axes is not cut off
first cut at server NGVD29 axes,
added if statement for dygraphs to decide which URL to use (previous
version did not display time series when zooming out after zooming in
Merge remote-tracking branch 'usgs_upstream/master'

Conflicts:
	dj_eden_app/templates/hydrograph_query.html
	dj_eden_app/views/page.py
merged in changes to page.py and hydrograph_query.html
first cut at NGVD29 axes on server side
Merge pull request #15 from ayan-usgs/master

server-side NGVD29 axes, merged in other changes