Mobile search bar fixes (#1032)

* Mobile search bar fixes

# Fixed
- Fixed: Fixed an issue with longer usernames causing header to wrap to another line. (develop)
- Fixed: Fixed an issue where the close button for the search was not centered on mobile. Verified on iOS Safari and iOS Chrome. (develop)

* Adding artist to search, fixing cover artist in search

UI/Web/src/app/_services/series.service.ts

@@ -198,6 +198,7 @@ export class SeriesService {
       libraries: [],
       genres: [],
       writers: [],
+      artists: [],
       penciller: [],
       inker: [],
       colorist: [],