Enable updating of VocabularyEntries

Ensure id string is not blank.
VocabulariesController and views.

Ohm method is delete not destroy.

Styling and translation for Vocabulary views.

Link in header

Clean up styling

Ensure empty descriptions are not created.

Only show name input on creation flow.

List styling.

Javascript hook to enable adding multiple new entries at a time.
Merge branch 'master' of https://github.com/Det-Kongelige-Bibliotek/valhal