Verbesserungen Suche: Es werden am Anfang im MetaDatenRepository _alle_

Metadaten geladen und an der Oberfläche die Suche ausgelöst, sobald
Eingaben da sind (nicht nur Volltext)

src/main/java/at/ac/uibk/gitsearch/repository/search/MetaDataRepository.java

@@ -153,6 +153,9 @@ public class MetaDataRepository {
 			reloadedCachedCompletions.put(SearchRepositoryConstants.METADATA_PROGRAMMING_LANGUAGES, new TreeMap<>());
 
 			SearchRequest searchRequest = new SearchRequest(SearchRepositoryConstants.INDEX_METADATA);
+			SearchSourceBuilder sourceBuilder = new SearchSourceBuilder().size(1000).from(0);
+			
+			searchRequest.source(sourceBuilder);
 
 			SearchResponse searchResponse = elasticsearchClient.search(searchRequest, RequestOptions.DEFAULT);
 			ObjectMapper objectMapper = new ObjectMapper();

src/main/webapp/app/mock-search/mock-search.component.ts

@@ -34,7 +34,7 @@ export class MockSearchComponent implements OnInit {
   }
 
   private search(): void {
-    if (this.searchInput.fulltextQuery) {
+    if (this.searchInput.fulltextQuery || this.searchInput.metadata.programmingLanguage || this.searchInput.metadata.keyword || this.searchInput.metadata.author || this.searchInput.metadata.license) {
       this.searchService.searchPageDetails(this.searchInput).subscribe(
         (data: SearchResultsDTO) => {
           const searchResults = this.parseSearchResultsDTO(data);