timeline reload in UI, other small fixes

as well as formatting of content

Added stack trace for SQL queries in development
Removed badly thought out accounts/lookup API

behaviour with Turbolinks enabled, optimizing Rabl for production

in the pool, adding a throttle of 60rpm per IP, adding mini profiler, adding
admin status to users

and atom feed generation to some extent, as well as the way mentions are
stored

(But there are no Atom feed pagination elements yet)

relations on Status#mentions

when registering incoming status mentions, add Travis CI file

local followers. Remote users' usernames SHOULD be case-sensitive

POST /api/statuses                  Params: status (text contents), in_reply_to_id (optional)
GET  /api/statuses/:id
POST /api/statuses/:id/reblog

GET  /api/accounts/:id
GET  /api/accounts/:id/following
GET  /api/accounts/:id/followers
POST /api/accounts/:id/follow
POST /api/accounts/:id/unfollow

POST /api/follows                  Params: uri (e.g. user@domain)

OAuth authentication is currently disabled, but the API can be used with HTTP Auth.