PLT-946 Add status icon to the left of the username in DM channel (#3258)

Add a StatusIcon component to be able to display a status icon from anywhere

webapp/sass/responsive/_mobile.scss

@@ -590,6 +590,8 @@
 
             .navbar-brand {
                 white-space: nowrap;
+
+                @import "../components/status-icon";
             }
         }
     }