[NEW] Option to ignore users on channels

[ggazzo]

Closes #9785

as @rodrigok said on #9785

Specification:

• The list will be per room
• Will be saved in user's subscription as an array of users to mute
• Will be a field in room's setting using the component we already have to select users when creating a new channel
• There will be a button in user's detail view and in message's context menu to mute/unmute the user (methods to be developed)
• Will show an icon (to be defined) in members list to mark muted users
• Will affect the rendering of the messages
• Will hide the user's messages when listed in muted array but will keep the username adding a button to expand/show the messages
• Should not send notifications and emails of messages from muted users
• ~Should update the array of muted usernames when user change his username (RocketChat._setUsername)
• The minimized message will be designed soon ??

@gdelavald thanks <3

[graywolf336]

As stated in this comment, #9785 (comment), the rest api wrapper is needed as well.

[ggazzo]

I'm waiting for the API too (:

[ggazzo]

just a joke <3

[karlprieb]

@graywolf336 yep... we will change this design probably on the RC. Our design team is working on that.

waiting for @ggazzo type checker update

Addressed