Implementation of picture addition button in editor.

frontend/src/app/pages/publication-edition/publication-edition.component.ts

@@ -104,6 +104,10 @@ export class PublicationEditionComponent implements OnInit, OnDestroy {
     this.publicationEditionService.insertTitle(titleNumber);
   }
 
+  selectAPicture(): void {
+    this.publicationEditionService.selectAPicture();
+  }
+
   insertLink(): void {
     this.publicationEditionService.insertLink();
   }