[master] misc patches

Four unrelated patches for master.

-- 
David Cantrell <dcantrell redhat com>
Red Hat, Inc. / Honolulu, HI

Follow-Ups:
- [PATCH 1/4] Show unknown partitions as "Unknown" in partition editor.
  - From: David Cantrell
- [PATCH 2/4] Ask for hostname after all possible net configuration (#472379)
  - From: David Cantrell
- [PATCH 3/4] Test NM_CONTROLLED setting correctly in network.py (#502466)
  - From: David Cantrell
- [PATCH 4/4] Use gettext.ldngettext when necessary (#467603)
  - From: David Cantrell
- Re: [master] misc patches
  - From: Hans de Goede