message: Refactor Profile Pic Upload
  Removed uncommented code.
diff: <span *ngIf="isLoggedIn()">
  <button mat-button routerLink="/profile">
  - <!--<span class="user-icon" user-image [user-image]="this.userService.user" [size]="'30px'"></span>-->
  - <!--<img class="avatar" src="{{this.chooseUserPicture(30)}}" width="30" height="30">-->
  <img *ngIf="this.actualProfilePicturePath == '' || this.actualProfilePicturePath == null; else elseBlock"
  class="avatar" src="{{this.userService.user.getGravatarURL(30)}}" width="30" height="30">
  <ng-template #elseBlock>
  