Use new shared plurals code

trans/managers.py

@@ -2,6 +2,8 @@ from django.db import models
 
 from lang.models import Language
 
+from util import is_plural, split_plural, join_plural
+
 class TranslationManager(models.Manager):
     def update_from_blob(self, subproject, code, path, blob):
         '''
@@ -19,7 +21,7 @@ class UnitManager(models.Manager):
         '''
         Process translation toolkit unit and stores/updates database entry.
         '''
-        src = '\x00\x00'.join(unit.source.strings)
+        src = join_plural(unit.source.strings)
         ctx = unit.getcontext()
         dbunit, created = self.get_or_create(
             translation = translation,