Use Flask-RESTful
Add API endpoints for messages
Add user list API endpoint
Move inbox view to AngularJS
Serve angular templates from static/
Fetch the message list via REST API
Display individual messages with AngularJS
Add a message compose form
Use Angular UI Bootstrap instead of jQuery
Add email completion in compose
Make Send button work,
Assorted fixes
Add a view to create test users
Wire up compose in the inbox UI