* Fix static assets not being found on some subpages (via use of url_for)
* Fix some text having the same color as the background

* remodel the "versions" side bar entry to a "DOI" entry, and add the
  new and proper "versions" entry from invenio-app-rdm
* reorder the side bar entries (versions, doi, export, cite as)

* add a new blueprint that is registered by Invenio for all view
  functions
* this allows us to access Invenio-Cache easily, to cache function calls

* creators now have the "name" nested inside a property called
  "person_or_org"

* currently uses a GET request to the record's DOI URL
* this should be changed to use locally known information instead,
  because we should already have all the relevant metadata

* the previously used fix (lost during adjustment for new release) was
  re-applied

* according to spec, publication_date can be an EDTF interval (instead
  of a plain date)

* some parts of invenio-rdm-records were refactored and moved to
  invenio-app-rdm

* chosen by label-colouring afficionado Tomasz

* add possibility to hide local login via email and password
* change the background colour to TUW blue