Now that the app and LMS use the same version of font-awesome, we might want to align some icons that are currently different, like the ones displayed for blocked or muted users. 

In LMS they use the folllowing icons:

While in the app we use:

However, it's important to notice that changing this icons will affect another place. When you're inside a conversation, in the top-right menu you have a popover with actions like Block user, Mute, etc. In LMS they don't display any icon in there, but in the app we do:

If we change the icons used to display that a user is blocked/muted, we should probably change the icons displayed in the Block/Mute actions too.