message: Hide tutorial button text on very small displays
diff: <mat-icon>
  school
  </mat-icon>
  - {{'BTN_GETTING_STARTED' | translate}}
  + <span fxShow fxHide.lt-sm>{{'BTN_GETTING_STARTED' | translate}}</span>
  </button>
  <button mat-raised-button class="close-dialog" (click)="closeWelcome()" color="primary" aria-label="Close Welcome Banner">
  {{"BTN_DISMISS" | translate}}
  