message: Fix select popover width for narrow inputs
diff: <mdl-popover #popover tabindex="-1"
  [class.mdl-popover--above]="autocomplete"
  [hide-on-click]="!multiple"
  - [style.width.%]="100">
  + [style.minWidth.%]="100">
  <div class="mdl-list mdl-shadow--6dp">
  <ng-content *ngIf="popoverComponent.isVisible"></ng-content>
  </div>
  