Add methods required by Flask-Login
Configure LoginManager
Set up session key
Roll blog into existing app
Remove old versioning/migration system
Revert "Remove old versioning/migration system"

This reverts commit 53342547da752d37f3f06ff231cae56ef11d8297.
Finish reconfiguring models
Tie Switch app to blog
Tweak blog layout
Sketch in basic blog post form
Add admin route and model for blog posts
Merge branch 'master' of github.com:jhgilbert/5_prong