Filtering Bugs + OPDS Want To Read (#2210)

* Fixed Summary not allowing an empty field, as it should allow that.

* Cleaned up some localization wording and put a todo for a bug with library filtering not working.

* Added Want to Read to OPDS stream

* Implemented the ability to disable adding filter rows for bookmarks page which only supports one filter type.

* Fixed the library filtering code

* Fixed a bunch of titles across the app. Fixed about system page not showing data quick enough.

* Hide API key by default and show a button to unhide. Fixed a styling issue with input group buttons.

* Fixed a hack to support zh_Hans language code to work for things like pt-br as well.

* Fixed transloco not supporting same language scheme as Weblate, but somehow needs all languages.

* Fixed the rating on series detail not being inline with other sections

UI/Web/src/app/user-settings/user-preferences/user-preferences.component.html

@@ -416,8 +416,8 @@
                 <ng-container *ngIf="tab.fragment === FragmentID.Clients">
                   <div class="alert alert-warning" role="alert" *ngIf="!opdsEnabled">{{t('clients-opds-alert')}}</div>
                   <p>{{t('clients-opds-description')}}</p>
-                  <app-api-key [tooltipText]="t('clients-api-key-tooltip')"></app-api-key>
-                  <app-api-key [title]="t('clients-opds-url-tooltip')" [showRefresh]="false" [transform]="makeUrl"></app-api-key>
+                  <app-api-key [tooltipText]="t('clients-api-key-tooltip')" [hideData]="true"></app-api-key>
+                  <app-api-key [title]="t('clients-opds-url-tooltip')" [hideData]="true" [showRefresh]="false" [transform]="makeUrl"></app-api-key>
                 </ng-container>
                 <ng-container *ngIf="tab.fragment === FragmentID.Theme">
                   <app-theme-manager></app-theme-manager>