Conference call: display "moderator" and "muted" participants icons

changed milestone to %Iteration 25

added SprintIn progress label

added SprintTo review label and removed SprintIn progress label

changed milestone to %Iteration 26

changed milestone to %Iteration 27

removed milestone %Iteration 27

changed milestone to %Backlog

https://review.jami.net/c/ring-client-android/+/16735

closed

added SprintDone label and removed SprintTo review label