Change Details

**Motivation** Users can define a default namespace selection in the currrent namespace search UI. This selection should be used as default namespace selection when using the advanced search, too. **Task** Use the default namespaces ("what the backend gives you as namespaces") when otherwise no namespaces would be selected **Acceptance Criteria** * When a user goes onto SpecialSearch:Page, their default preferences are shown in the namespaces bar (done in T172260) * When unchecking the "all" namespace preset the user's default preferences are shown in the namespaces bar * if a user does have an empty default preference, the MAIN_NAMESPACE (article) is used as user's default preference (status quo) * we don't persist preference change (that is T181638)

**Motivation** Users can define a default namespace selection in the currrent namespace search UI. This selection should be used as default namespace selection when using the advanced search, too. **Task** Use the default namespaces ("what the backend gives you as namespaces") when otherwise no namespaces would be selected **Acceptance Criteria** * When a user goes onto SpecialSearch:Page, their default preferences are shown in the namespaces bar (done in T172260, this is the follow-up) * When unchecking the "all" namespace preset the user's default preferences are shown in the namespaces bar * if a user does have an empty default preference, the MAIN_NAMESPACE (article) is used as user's default preference (status quo) * we don't persist preference change (that is T181638)

**Motivation** Users can define a default namespace selection in the currrent namespace search UI. This selection should be used as default namespace selection when using the advanced search, too. **Task** Use the default namespaces ("what the backend gives you as namespaces") when otherwise no namespaces would be selected **Acceptance Criteria** * When a user goes onto SpecialSearch:Page, their default preferences are shown in the namespaces bar (done in T172260, this is the follow-up) * When unchecking the "all" namespace preset the user's default preferences are shown in the namespaces bar * if a user does have an empty default preference, the MAIN_NAMESPACE (article) is used as user's default preference (status quo) * we don't persist preference change (that is T181638)