BibFormat: Disable escaping in abstract

* Disabled escaping in abstract in Default_HTML_detailed.bft.
BibFormat: Equations in title and keywords

* Removes escaping from title and keywords formating elements in
  order to print equations.
SCOAP3: Global variable for Elsevier packages.

* Adds global variable with path to directory to store packages
  harvested from Elsevier.
SCOAP3: Adding a new folder to invenio-autotools.conf

* Adds a folder for harvesting Springer repository.
SCOAP3: adding Oxford downloaddir
BibFormat: new link attribute in bfe_title_brief

* Introduces a new link attribute in bfe_title_brief
  allowing to directly link a title to the detailed
  record.

Signed-off-by: Samuele Kaplun <samuele.kaplun@cern.ch>
WebSearch: no restricted collection wording

* When a site does not use restricted collections, improves
  the wording when no records are matched by not
  mentioning about restricted collections.

Reported-by: Salvatore Mele <salvatore.mele@cern.ch>
Signed-off-by: Samuele Kaplun <samuele.kaplun@cern.ch>
WebSearch: improve SCOAP3 text
SCOAP3: inline math also for $$..$$
BibFormat: new bfe_license.py format element

* Introduces new bfe_license.py format element to
  display in a simple way licensing information with
  corresponding link.

Signed-off-by: Samuele Kaplun <samuele.kaplun@cern.ch>
WebSearch: smarter primary collection guess

* Improves the implementation of guess_primary_collection_of_a_record()
  by actually falling back to search for the smallest collection
  containing the given record and having a query defined.

Signed-off-by: Samuele Kaplun <samuele.kaplun@cern.ch>
WebStyle: POST handling fix
crossrefutils: port to Fundref v13

* Adapts the call to Fundref APIs after the recent
  change in routes.
  See: https://github.com/CrossRef/fundrefplus_doc/blob/master/funder_kpi_api.md

Signed-off-by: Samuele Kaplun <samuele.kaplun@cern.ch>
Merge branch 'scoap3' of github.com:SCOAP3/invenio into scoap3