Merge branch 'master' into next

* master:
  installation: python-twitter requirement update
  errorlib: tags context fix for sentry
  WebSearch: inverted collection scores
  BibFormat: recjson update using bibreformat
  BibFormat: PEP8 fixes in bibreformat

Signed-off-by: Jiri Kuncar <jiri.kuncar@cern.ch>

Conflicts:
	invenio/legacy/bibformat/bibreformat.py
	modules/miscutil/demo/democfgdata.sql
	modules/miscutil/lib/errorlib.py
	requirements.txt