Add explicit reverse zones#1

Open

kampfschlaefer wants to merge 10 commits intotnarik:masterfrom

kampfschlaefer:add_reverse_zones

Commits on Aug 20, 2013

Start adding explicit reverse zones.
kampfschlaefer
committed

Commits on Aug 21, 2013

Commits on Sep 6, 2013

Commits on Dec 5, 2013

fix the sorting for the results
kampfschlaefer
committed

Commits on Jan 28, 2014

Commits on Feb 3, 2014

Actually fix it.
kampfschlaefer
committed