Merge branch '2-all-search-categories-search-songs' into 'master'

Resolve "All search categories search songs"

Closes #2

See merge request openlp/web-remote!12

src/app/components/search/search.component.ts

@@ -23,7 +23,6 @@ export class SearchComponent implements OnInit {
 
   onSubmit() {
     this.currentPlugin = this.selectedPlugin;
-    this.currentPlugin = 'songs';
     this.openlpService.search(this.currentPlugin, this.searchText).subscribe(items => this.searchResults = items);
   }