installation: fix webaccess Makefile
BibConvert: fix arXiv license info
BibHarvest: improved 773 pubnote extraction

* Moves the journal reference (or "pubnote") parsing from XSLT
  to using RefExtract API instead to consolidate on one place
  for all reference analysis.

Reviewed-by: Jan Aage Lavik <jan.age.lavik@cern.ch>
BibTaskUtils: add BibTask sleeping
BibTasklets: better sleep handling in APS harvest

* In certain cases the calculated time to sleep between requests
  could be below zero. The timings and handling of this is now
  improved.
Updates author pages regression tests
tests: renames web test into web_regression_tests.py

* Also now installs the test in Invenio module directory.
Activate web tests for restricted tools by default

* Uses admin with no password to run tests on builders.
tests: renames to inspire_regression_tests.py for buildbot
tests: final change to test name

* Properly renames the tests to be caught by buildbots.
BibFormat: modify abstract display

* Adds new INSPIRE_abstract format element, for displaying
  multiple abstracts in Inspire

Co-authored-by: Javier Martin Montull <javier.martin.montull@cern.ch>
BibFormat: fix abstract