Merge branch 'develop' of github.com:RocketChat/Rocket.Chat into develop

.github/CONTRIBUTING.md

.travis.yml

README.md

packages/rocketchat-custom-oauth/custom_oauth_server.coffee

packages/rocketchat-emojione/emojiPicker.html

packages/rocketchat-emojione/emojiPicker.js

packages/rocketchat-lib/client/MessageAction.coffee

packages/rocketchat-lib/client/TabBar.coffee

packages/rocketchat-lib/i18n/ar.i18n.json

packages/rocketchat-lib/i18n/cs.i18n.json

packages/rocketchat-lib/i18n/de.i18n.json

packages/rocketchat-lib/i18n/el.i18n.json

packages/rocketchat-lib/i18n/en.i18n.json

packages/rocketchat-lib/i18n/es.i18n.json

packages/rocketchat-lib/i18n/fa.i18n.json

packages/rocketchat-lib/i18n/fi.i18n.json

packages/rocketchat-lib/i18n/fr.i18n.json

packages/rocketchat-lib/i18n/he.i18n.json

packages/rocketchat-lib/i18n/hr.i18n.json

packages/rocketchat-lib/i18n/hu.i18n.json