message: Fix issues in IE Edge as setDragImage is not available for dragstart event object
diff: </div>
  - <div class="flogo-logs-lines" [style.overflow-y]="isExternal ? 'none' : 'scroll'">
  + <div class="flogo-logs-lines" [style.overflow-y]="isExternal ? 'none' : 'auto'">
  <div class="content-section">
  <div *ngFor="let message of logService.lines | flogoLogsSearch : searchValue" class="log-line">
  <div class="log-line__timestamp">{{message.timestamp}}</div>
  