improved file listing in search and other changes

[blancoj]

modified:   src/app/admin/admin-sidebar/admin-sidebar.component.ts

To expand sidebar and pin it from the start.

modified:   src/app/shared/listfiles/listfiles.component.html

Listing of files in search/browse

modified:   src/app/shared/listfiles/listfiles.component.ts

Hardcoded the number of files to show on browse/search to 1000

modified:   src/app/shared/object-list/search-result-list-element/item-search-result/item-types/item/item-search-result-list-element.component.html

put in date.issued and author plus et. al. and

modified:   src/app/shared/search/search-sidebar/search-sidebar.component.html

move settings to the top above Filters.