Label the server icon & standardize debug css

Author: alexcjohnson

dash-renderer/src/components/error/icons/CheckIcon.svg

@@ -22,24 +22,9 @@
 }
 
 .dash-debug-menu__icon {
-    width: 24px;
-    height: 28px;
-}
-.dash-debug-menu__icon--bell {
-    height: 24px;
-    width: 28px;
-}
-.dash-debug-menu__icon--debug {
-    height: 24px;
     width: auto;
-}
-.dash-debug-menu__icon--graph {
     height: 24px;
 }
-.dash-debug-menu__icon--indicator {
-    height: 54px;
-    width: 54px;
-}
 
 .dash-debug-menu__outer {
     transition: 0.3s;

dash-renderer/src/components/error/icons/ClockIcon.svg

@@ -98,7 +98,7 @@ class DebugMenu extends Component {
                     'bell',
                     errCount + ' Error' + (errCount === 1 ? '' : 's')
                 )}
-                {buttonFactory(false, status, null, _StatusIcon, 'indicator')}
+                {buttonFactory(false, status, null, _StatusIcon, 'indicator', 'Server')}
             </div>
         ) : (
             <div className="dash-debug-menu__content" />