Added new Catalan strings (#3843)

Added new Catalan strings (#3843)

* Add Catalan language

* Add Catalan language

* Update ca.json

* Update ca.json

* Update ca.json

* Update ca.json

* Update ca.json

* Update ca.json

* Update settings_helper.rb

* Update mastodon.js

* Update index.js

* Update application.rb

* Update ca.yml

* removed extra spaces at line 225

* Catalan translation update

added activerecord.ca.yml

* Update activerecord.ca.yml

Done

* Updated activerecord.ca.yml

* Catalan language updated

* Catalan language updated

* Catalan language updated

* Catalan language updated

* Catalan language updated

* Update ca.json

Removed :

<<<<<<< HEAD
  "getting_started.support": "{faq} • {userguide} • {apps}",
=======
>>>>>>> upstream/master