message: Fixed Html of dashboard
diff: </p>
  </mat-card-content>
  <mat-card-actions>
  - <span class="course-admin-actions" *ngIf="this.userService.isCourseTeacherOrAdmin(course)">
  + <span class="course-admin-actions" *ngIf="this.course.userCanEditCourse">
  + <button mat-icon-button (click)="editCourse(course._id)">
  + <mat-icon>mode_edit</mat-icon>
  + </button>
  +
  + <button mat-icon-button (click)="showReport(course._id)">
  + <mat-icon>show_chart</mat-icon>
  + </button>
  +
  + <button mat-icon-button *ngIf="!course.active" disabled>
  + <mat-icon color="warn">visibility_off</mat-icon>
  + </button>
  + </span>
  + <span class="course-admin-actions" *ngIf="course.userCanEditCourse">
  <button mat-icon-button (click)="editCourse(course._id)">
  <mat-icon>mode_edit</mat-icon>
  </button>
  <span class="course-student-actions" *ngIf="this.userService.isStudent()">
  <div style="float:left">
  <i class="material-icons" style="margin-top: 8px;"
  - matTooltip="course locked by access key"
  - *ngIf="course.enrollType == 'accesskey'">lock</i>
  + matTooltip="Key Required"
  + *ngIf="course.enrollType === 'accesskey'">lock</i>
  <i class="material-icons" style="margin-top: 8px;"
  - matTooltip="free course"
  - *ngIf="course.enrollType != 'accesskey'">lock_open</i>
  + matTooltip="No Key Required"
  + *ngIf="course.enrollType !== 'accesskey'">lock_open</i>
  </div>
  - <div style="float:left">
  - <button mat-icon-button *ngIf="!this.isMemberOfCourse(course)"
  - (click)="enroll()" matTooltip="Enroll">
  - <mat-icon>add_circle_outline</mat-icon>
  - </button>
  - </div>
  -
  - <button mat-icon-button *ngIf="this.isMemberOfCourse(course)"
  - (click)="leave()" matTooltip="Leave">
  <button mat-icon-button *ngIf="!course.userIsCourseMember"
  (click)="enroll()" matTooltip="Enroll">
  <mat-icon>add_circle_outline</mat-icon>
  