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

.meteor/packages

.sandstorm/buildrc.sh

.sandstorm/preprcbuild.sh

.sandstorm/sandstorm-pkgdef.capnp

.travis.yml

README.md

i18n/en.i18n.json

packages/rocketchat-favico/favico.js

packages/rocketchat-lib/package.js

packages/rocketchat-lib/server/functions/setUsername.coffee

packages/rocketchat-lib/server/lib/RateLimiter.coffee

packages/rocketchat-lib/server/methods/setUsername.coffee

packages/rocketchat-lib/server/startup/settings.coffee

packages/rocketchat-livechat/client/ui.js

...ocketchat-livechat/client/views/app/livechat-manager.html

...rocketchat-livechat/client/views/app/livechatManager.html

...s/rocketchat-livechat/client/views/app/livechatManager.js

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

packages/rocketchat-livechat/i18n/pt.i18n.json

packages/rocketchat-livechat/package.js