config: language problem fix

* Fixes an issue where resetting the sitename would break
  due to missing names for all languages.

Signed-off-by: Jan Aage Lavik <jan.age.lavik@cern.ch
fixtures: oai_harvest update to arXiv math harvest
base: adaptation to new search form from invenio

* Changes usage of search_form macro to include
  of search/form/index.html.

Signed-off-by: Kamil Neczaj <kamil.neczaj@cern.ch>
fixtures: tag, field, field_tag tables from production
search: facet adaptation to invenio new facet gui

Signed-off-by: Kamil Neczaj <kamil.neczaj@cern.ch>