BibIndex: fix for regression tests

* Fixes regression tests for 'itemcount' index.

Signed-off-by: Grzegorz Szpura <grzegorz.szpura@cern.ch>
Reviewed-by: Jiri Kuncar <jiri.kuncar@cern.ch>
utils: formatting + PEP8

Signed-off-by: Yoan Blanc <yoan.blanc@cern.ch>
utils: fix dateutils.datetime.combine method.

* Adds the missing time.second into the constructor.

Signed-off-by: Yoan Blanc <yoan.blanc@cern.ch>
utils: test convert_datetext_to_datestruct

Signed-off-by: Yoan Blanc <yoan.blanc@cern.ch>
utils: test date.convert_datestruct_to_dategui

Signed-off-by: Yoan Blanc <yoan.blanc@cern.ch>