message: showing controls (mainly faces) during pan. fixes
diff: @@ -80,6 +80,7 @@ export class ControlsLightboxComponent implements OnDestroy, OnInit, OnChanges {
  this.prevDrag.x = this.drag.x;
  this.prevDrag.y = this.drag.y;
  this.zoom = zoom;
  + this.showControls();
  this.checkZoomAndDrag();
  }
  @@ -124,6 +125,7 @@ export class ControlsLightboxComponent implements OnDestroy, OnInit, OnChanges {
  }
  this.drag.x = this.prevDrag.x + $event.deltaX;
  this.drag.y = this.prevDrag.y + $event.deltaY;
  + this.showControls();
  this.checkZoomAndDrag();
  if ($event.isFinal) {
  this.prevDrag = {
  