Fix ImportError.

admin_interface/templatetags/admin_interface_tags.py

@@ -10,8 +10,8 @@ from django.utils import translation
 from slugify import slugify
 
 from admin_interface.cache import get_cached_active_theme, set_cached_active_theme
+from admin_interface.metadata import __version__
 from admin_interface.models import Theme
-from admin_interface.version import __version__
 
 register = template.Library()