* Move ApiController to Api/BaseController

* API controllers inherit from Api::BaseController

* Add coverage for various error cases in api/base controller

* Added API backend for notification dismissal

* Added render statement

* Changed statement

* Add exclude_types param to /api/v1/notifications

* Exclude notification types in web UI through exclude_types in the API

* Make /api/v1/timelines/public and /api/v1/timelines/tag/:id public
Fix #1156 - respect query params when generating pagination links in API

* Apply pagination fix to more APIs

make status pagination headers generation more lax about next page
existing

now return empty hash instead of throwing a 404 error. When following,
merge into timeline will filter statuses

Better initial state for unlisted/nsfw toggles

before loading new one, cache notifications API, fix missing follow button
on public profiles