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

.meteor/versions

.sandstorm/sandstorm-pkgdef.capnp

client/methods/pinMessage.coffee

client/methods/unpinMessage.coffee

i18n/en.i18n.json

packages/rocketchat-integrations/server/api/api.coffee

packages/rocketchat-lib/rocketchat.info

packages/rocketchat-lib/server/models/Messages.coffee

...ketchat-livechat/client/views/app/livechatInstallation.js

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

packages/rocketchat-mentions-flextab/i18n/en.i18n.json

...ions-flextab/server/publications/mentionedMessages.coffee

packages/rocketchat-message-pin/client/actionButton.coffee

packages/rocketchat-message-pin/client/pinMessage.coffee

...rocketchat-message-pin/client/views/pinnedMessages.coffee

...s/rocketchat-message-pin/client/views/pinnedMessages.html

...chat-message-pin/client/views/stylesheets/messagepin.less

packages/rocketchat-message-pin/package.js

...hat-message-pin/server/publications/pinnedMessages.coffee

packages/rocketchat-message-star/client/actionButton.coffee