add fix for issue #734, allow saving blank times

improve AdminIndexView docs, prevent breaking static files when root url='/'

Updated formatting for code snippets to show line break in on github

Geoa contrib module using Geoalchemy2 elements with SRID support

fix pull request #729 python 3 compatibility

Add test for single custom filter on relation and column_labels

Conflicts:
	doc/db_geoa.rst

Up to date

Commented out section that doesn't seem to match how leaflet returns deleted values. Allowed for formating differences in another geojson string.

Clarify docs re: geoa ModelView

Probably doing something horrible! Using current_app.extensions['sqlalchemy'].db.session to get a valid session for getting the list view maps into the correct SRID

Changes to use Geoalchemy2/PostGIS functions. Doesn't currently work as it requires access to the db.session.