BibAuthorID: s/persons/records in affiliations logging
errorlib: context support in sentry

* Introduces support for HTTP, and user context in sentry, by
  exploiting information provided in req object when available.

Signed-off-by: Samuele Kaplun <samuele.kaplun@cern.ch>
BibEdit: user name in BibSched column

Signed-off-by: Javier Martin Montull <javier.martin.montull@cern.ch>
WebSearch: filtering of citation tab counts

* Does not filter anymore by collection:citeable in the counts displayed
  next to the tab title.
BibAuthorID: get_arxiv_url() fix

* Fixes generation of arXiv URL.

Signed-off-by: Samuele Kaplun <samuele.kaplun@cern.ch>