build: Use prettier for html

Stop ignoring html files in prettier and fix existing issues.

src/app/shared/language-selector/language-selector.component.html

@@ -1,8 +1,8 @@
 <mat-form-field id="language-selector" class="m-l-10">
-  <mat-label>{{'labels.inputs.Language' | translate}}</mat-label>
+  <mat-label>{{ 'labels.inputs.Language' | translate }}</mat-label>
   <mat-select [formControl]="languageSelector" (selectionChange)="setLanguage()" class="languageselector">
     <mat-option *ngFor="let language of languages" [value]="language">
-      {{ 'languages.' + language | translate}}
+      {{ 'languages.' + language | translate }}
     </mat-option>
   </mat-select>
 </mat-form-field>