update german „on top of“ translation

src/c3nav/locale/de/LC_MESSAGES/django.po

@@ -8,7 +8,7 @@ msgstr ""
 "Project-Id-Version: \n"
 "Report-Msgid-Bugs-To: \n"
 "POT-Creation-Date: 2017-07-08 19:29+0200\n"
-"PO-Revision-Date: 2017-07-08 19:33+0200\n"
+"PO-Revision-Date: 2017-07-08 19:38+0200\n"
 "Last-Translator: Laura Klünder <laura@codingcatgirl.de>\n"
 "Language-Team: \n"
 "Language: de\n"
@@ -426,7 +426,7 @@ msgstr "zurück zur übergeordneten Etage"
 
 #: c3nav/editor/templates/editor/level.html:36
 msgid "Levels on top"
-msgstr "Etagen oberhalb"
+msgstr "Zwischenetagen über dieser"
 
 #: c3nav/editor/templates/editor/list.html:15
 #, python-format
@@ -832,7 +832,7 @@ msgstr "Bodenhöhe"
 
 #: c3nav/mapdata/models/level.py:19
 msgid "on top of"
-msgstr "über"
+msgstr "Halbetage über"
 
 #: c3nav/mapdata/models/level.py:23
 msgid "Levels"