* 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

Rocket.Cat Shouldn't be Admin, allowing first users to be admins again

The avatar image move need to only be done if a previous username exists. 
Also we need `encodeURIComponent` to support names in unicode.

fix broken image-link when og:image contains "&" (e.g. Google Maps)

Avatars for Unicode usernames

When a new avatar is saved the user name gets encoded using `encodeURIComponent`, this does not affect names in latin characters, however it does change non-latin/unicode names to an encoded string.

However, when reading the avatar image file, the function uses the username directly without enocinding it, so latin names work since the encoding doesn't change anything, however, Unicode names don't since the usernames don't match the encoded names.

This fix adds the encoding function when reading the avatars.
Also adds the encoding to the function that writes avatars from URL.

Livechat survey