inveniocfg: tests runner file closure fix

* Fixes "I/O operation on closed file" when running
  inveniocfg_unit_tests.py due to logging trying to cleanup
  a closed StringIO.  (closes #1327)

Reviewed-by: Tibor Simko <tibor.simko@cern.ch>
Merge branch 'maint-1.1'

* maint-1.1:
  inveniocfg: tests runner file closure fix
BibFormat: additional fulltext file display in HB

* Improves display of Additional files in the default HB format
  displaying the link "(additional files)".  (closes #1219)

Reported-by: Devin Bougie <devin.bougie@cornell.edu>
Reviewed-by: Tibor Simko <tibor.simko@cern.ch>
Merge branch 'maint-1.0' into maint-1.1

* maint-1.0:
  BibFormat: additional fulltext file display in HB
Merge branch 'maint-1.1'

* maint-1.1:
  BibFormat: additional fulltext file display in HB
Merge branch 'master' into next

* master:
  BibFormat: additional fulltext file display in HB
  inveniocfg: tests runner file closure fix