Hide media control bar when no control is marked for display

docs/release-notes-player.txt

@@ -5,8 +5,7 @@ Player
    with the minRun property have been played.
  - Fix style and scroll behavior of marking buttons
  - Fix problem with truncated text in text components when using large font sizes
-
-
+ - Hide audio and video control bar when no control is marked for display
 
 1.5.0
  - Show the magnifier only when the mouse is over the image

projects/common/element-components/control-bar/control-bar.component.html

-<div class="control-bar"
-     [class.hint-border]="showHint">
+<div *ngIf="elementModel.startControl ||
+    elementModel.pauseControl ||
+    elementModel.showRestRuns ||
+    elementModel.progressBar ||
+    elementModel.showRestTime ||
+    elementModel.volumeControl"
+    class="control-bar"
+    [class.hint-border]="showHint">
   <ng-container *ngIf="elementModel.startControl">
     <button *ngIf="!playing || !elementModel.pauseControl"
             type="button"