introduce django-parler and geodjango to each other

src/c3nav/models.py

@@ -0,0 +1,20 @@
+from django.contrib.gis.db import models
+from django.contrib.gis.db.models.query import GeoQuerySet
+
+from parler.managers import TranslatableManager, TranslatableQuerySet
+from parler.models import TranslatableModel
+
+
+class TranslatableGeoQuerySet(TranslatableQuerySet, GeoQuerySet):
+    pass
+
+
+class TranslatableGeoManager(TranslatableManager):
+    queryset_class = TranslatableGeoQuerySet
+
+
+class TranslatableGeoModel(TranslatableModel, models.Model):
+    objects = TranslatableGeoManager()
+
+    class Meta:
+        abstract = True

src/requirements.txt

@@ -2,3 +2,4 @@ Django>=1.9,<1.10
 django-bootstrap3>=6.2,<6.3
 django-compressor==2.0
 csscompressor
+django-parler>=1.6,<17