* Persian translation update

* fix newline typo

* Remove best_in_place

* Replace best_in_place usage with rails helpers

* Move admin/settings#index to #edit action

* Remove click_to__edit from i18n

* Persian translation

* adding :fa to make the site use the rtl stylesheet

based on [this comment](https://github.com/tootsuite/mastodon/pull/2405#issuecomment-296721105)

* fix missing quotes

* add 'fa' locale