inveniocfg: fix for mod_headers

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

* maint-1.1:
  inveniocfg: fix for mod_headers
Merge branch 'master' into next

* master:
  inveniocfg: fix for mod_headers

Conflicts:
	modules/miscutil/lib/inveniocfg.py

Signed-off-by: Tibor Simko <tibor.simko@cern.ch>
containerutils: new Python-2.4 defaultdict

* Allows to use defaultdict with Python 2.4 as it comes
  with 2.5 and higher.

Signed-off-by: Patrick Glauner <patrick.oliver.glauner@cern.ch>
Tested-by: Tibor Simko <tibor.simko@cern.ch>
BibAuthorID: use defaultdict from containerutils

* Replaces local defaultdict backport with comprehensive
  one from containerutils.

Signed-off-by: Patrick Glauner <patrick.oliver.glauner@cern.ch>
Reviewed-by: Samuele Carli <samuele.carli@cern.ch>
Tested-by: Tibor Simko <tibor.simko@cern.ch>
Merge branch 'master' into next

* master:
  BibAuthorID: use defaultdict from containerutils
  containerutils: new Python-2.4 defaultdict
travis: initial configuration release
BibFormat: regression tests fix

* Adds template for HM output format.  (closes #1585)

* Addresses issues with user object used in `format_record`.

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