* Add test to handle suspended and missing users in BootstrapTimelineService

* Fix BootstrapTimelineService crashing when bootstrapped accounts are invalid

* Add autofollow option to invites

* Trigger CodeClimate rebuild

When a new user confirms their e-mail, bootstrap their home timeline
by automatically following a set of accounts. By default, all local
admin accounts (that are unlocked). Can be customized by new admin
setting (comma-separated usernames, local and unlocked only)