Invenio-requests

- mappings: change "dynamic" values to string
- ui: handle default case for EntityDetails (bug)
- ui: add group for EntityDetails
- init: move record_once to finalize_app

- major bump on invenio-users-resources

- calculated: make easier to support backwards compatibility

- installation: bump records-resources and users-resources

- replace ckeditor with tinymce due to license issue

- request metadata: add record link