- use consistent css units
- replace hard-coded color values with variables
- update disk quota chart render (to allow for variable colors)
- small style update to the notifications widget
When a user status doesn't include a status message, it still
may have a status emoji and it always has a status indicator
(e.g. online). When {showEmpty=true} then statuses without
a message are shown, otherwise hidden. Defaults to {false}.
