Add some tests for RSS.
Add RSS content service
Merge branch '1127_pull_bot' of github.com:TID-Lab/aggie into 1010_rss_content_service
Make fetch() callback-based
Merge branch 'develop' of github.com:TID-Lab/aggie into 1010_rss_content_service
Add error handling, avoid dupes, tests.
Created new static demo page
Allow loading static templates via http
Angular app skeleton
Tidied up styles a bit
Update routing to use pushState
Started authentication
Implement basic login / logout
Bots can manipulate sources; refactor RSS content service.
Add session data endpoint.
Update login form styles
Remove old angular app
Add session data endpoint.
Used /session endpoint to finish login
Fix merge conflicts.