Merge pull request #15 from Standard8/master

Adds Access control origin headers
Merge pull request #19 from Standard8/master

This commit fixes issue 18
Add "Message of the day" field to trees
Followup: remove redundant conditional, add comment
Merge pull request #26 from graememcc/motd

Fix for issue 24: Add "Message Of The Day" field for tree-specific information unrelated to openings/closures
Make "approval required" orange. Fixes: #31
Pre-fill reason in per-tree page.

Fixes #22
Add migrate support
handle database errors; pep8 improvements
add db manage script
updating requirements
handle schema upgrades in the db setup()
we don't need to do it in the .wsgi file now
make sure we show the MOTD!
Remove unused .wsgi file. You should copy treestatus.wsgi-dist to
treestatus.wsgi and update for your environment
Add link for filing bugs, since we're not using the Github issues tracker
Bug 823637 - Update repo location after move; r=me