mixer: add conferences index

Signed-off-by: Javier Martin Montull <javier.martin.montull@cern.ch>
config: orcid oauth configuration

Signed-off-by: Javier Martin Montull <javier.martin.montull@cern.ch>
base: jquery-plugin creator adapted to requirejs

Signed-off-by: Kamil Neczaj <kamil.neczaj@cern.ch>
mixer: arxiv to inspire categories kb addition

Signed-off-by: Pedro Gaudêncio <pedro.gaudencio@cern.ch>
deposit: arXiv categories to INSPIRE mapping

* Adds arXiv to INSPIRE categories knowledge base and maps them.

Signed-off-by: Pedro Gaudêncio <pedro.gaudencio@cern.ch>
deposit: kb front-ent mapping

Signed-off-by: Pedro Gaudêncio <pedro.gaudencio@cern.ch>