On login, don't return until BtUser saved.

Fixes #1.
Delete suspended TwitterUsers.
Delete all when /users/lookup 404s
Deploy via remote cache.
Excess space
Add defer attribute to scripts.
Use table-condensed.
Handle logged-out JSON requests properly.
Fix excessive query in actions.js
Change deploy path.
Use nested fetch in Actions.
Attribute Twitter errors to the user who triggered them.
Remove timestamps from Blocks table.
Add favicon
gslint auto-fix
Extract passportSuccessCallback and fix indent
Link bare uids to Twitter.
Loglevel for Sequelize -> trace, default loglevel -> warn.
Add index migrations.
Add indices in migrations. Fixes #37.