Allow emoji as avatar for webhooks/integrations

Livechat triggers

Conflicts:
	packages/rocketchat-livechat/app/client/views/room.html
	packages/rocketchat-livechat/app/client/views/room.js
	packages/rocketchat-livechat/assets/rocket-livechat.js
	packages/rocketchat-livechat/i18n/en.i18n.json

Created and pushed by LingoHub.

Improvements/upload

* master:

Update master from develop

* master:

* lingohub:
  Created and pushed by LingoHub. Project: 'Rocket.Chat' by User: 'gabriel.engel@gmail.com'.

Conflicts:
	packages/rocketchat-livechat/app/i18n/en.i18n.json

This is a good start. LIke noted by @litewhatever there are limitations that related to the way meteor works. I can see some workarounds we could do, but that would need to be discussed and maybe submitted back to MDG. 

Setting allows admin to modify Meteor.loginTokenExpires from default 90 days to something else.
Server restart is required for this setting to take effect.
Default value is still 90 days if not modified by admin.

Fixed indentation and added unicode support

Fix 'create new' in private group list opening 'create channel' flex

Show toastr messages on the left side

Option to turn off livechat