Convert all apps to use the new class based settings

apps/metadata/conf/settings.py

@@ -3,9 +3,9 @@
 import datetime
 
 from django.contrib.auth.models import User
+from django.utils.translation import ugettext_lazy as _
 
-from smart_settings.api import register_settings
-
+from smart_settings.api import Setting, SettingNamespace
 
 default_available_functions = {
     'current_date': datetime.datetime.now().date,
@@ -15,12 +15,18 @@ default_available_models = {
     'User': User
 }
 
-register_settings(
-    namespace=u'metadata',
-    module=u'metadata.conf.settings',
-    settings=[
-        # Definition
-        {'name': u'AVAILABLE_FUNCTIONS', 'global_name': u'METADATA_AVAILABLE_FUNCTIONS', 'default': default_available_functions},
-        {'name': u'AVAILABLE_MODELS', 'global_name': u'METADATA_AVAILABLE_MODELS', 'default': default_available_models},
-    ]
+namespace = SettingNamespace('metadata', _(u'Metadata'), module='metadata.conf.settings')
+
+Setting(
+    namespace=namespace,
+    name=u'AVAILABLE_FUNCTIONS',
+    global_name=u'METADATA_AVAILABLE_FUNCTIONS',
+    default=default_available_functions,
+)
+
+Setting(
+    namespace=namespace,
+    name=u'AVAILABLE_MODELS',
+    global_name=u'METADATA_AVAILABLE_MODELS',
+    default=default_available_models,
 )