diff --git a/MANIFEST.in b/MANIFEST.in
index 5f9d6514..187777ca 100644
--- a/MANIFEST.in
+++ b/MANIFEST.in
@@ -1 +1,2 @@
 recursive-include kqueen/blueprints/ *.html
+include kqueen/config/default_policy.json
diff --git a/kqueen/blueprints/api/views.py b/kqueen/blueprints/api/views.py
index 3f03ab48..c3999e9b 100644
--- a/kqueen/blueprints/api/views.py
+++ b/kqueen/blueprints/api/views.py
@@ -216,13 +216,16 @@ def provisioner_engine_list():
             module = import_module(module_path)
             _class = getattr(module, engine)
             parameters = _class.get_parameter_schema()
+            name = '.'.join([module_path, engine])
             engine_cls.append({
-                'name': '.'.join([module_path, engine]),
+                'name': name,
+                'verbose_name': getattr(_class, 'verbose_name', name),
                 'parameters': parameters
             })
         except NotImplementedError:
             engine_cls.append({
                 'name': engine,
+                'verbose_name': engine,
                 'parameters': {
                     'provisioner': {},
                     'cluster': {}
diff --git a/kqueen/engines/gce.py b/kqueen/engines/gce.py
index 92ca46a1..2338b822 100644
--- a/kqueen/engines/gce.py
+++ b/kqueen/engines/gce.py
@@ -23,7 +23,6 @@ class GceEngine(BaseEngine):
     """
     name = 'gce'
     verbose_name = 'Google Container engine'
-    # project = 'kqueen-186209'
     # TODO: only subset of possible choices for zone is listed in parameter_schema,
     # we could add more later, here is the list of possible choices:
     # https://cloud.google.com/compute/docs/regions-zones/
@@ -33,14 +32,34 @@ class GceEngine(BaseEngine):
                 'type': 'json_file',
                 'label': 'Service Account File (JSON)',
                 'validators': {
-                    'required': True
+                    'required': True,
+                    'jsonfile': [
+                        'private_key_id',
+                        'private_key',
+                        'client_email',
+                        'client_id',
+                        'auth_uri',
+                        'token_uri'
+                    ]
                 }
             },
             'project': {
                 'type': 'text',
                 'label': 'Project',
                 'validators': {
-                    'required': True
+                    'required': True,
+                }
+            }
+        },
+        'cluster': {
+            'node_count': {
+                'type': 'integer',
+                'label': 'Node Count',
+                'default': 1,
+                'validators': {
+                    'required': True,
+                    'min': 1,
+                    'number': True
                 }
             },
             'zone': {
@@ -58,18 +77,6 @@ class GceEngine(BaseEngine):
                     'required': True
                 }
             }
-        },
-        'cluster': {
-            'node_count': {
-                'type': 'integer',
-                'label': 'Node Count',
-                'default': 1,
-                'validators': {
-                    'required': True,
-                    'min': 1,
-                    'number': True
-                }
-            }
         }
     }
 
diff --git a/kqueen/models.py b/kqueen/models.py
index 305f0c7f..7bd3078d 100644
--- a/kqueen/models.py
+++ b/kqueen/models.py
@@ -294,6 +294,7 @@ def apply(self, resource_text):
 class Provisioner(Model, metaclass=ModelMeta):
     id = IdField(required=True)
     name = StringField(required=True)
+    verbose_name = StringField(required=False)
     engine = StringField(required=True)
     state = StringField()
     parameters = JSONField()
@@ -324,10 +325,6 @@ def get_engine_cls(self):
             _class = None
         return _class
 
-    @property
-    def engine_name(self):
-        return getattr(self.get_engine_cls(), 'verbose_name', self.engine)
-
     def engine_status(self, save=True):
         state = config.get('PROVISIONER_UNKNOWN_STATE')
         engine_class = self.get_engine_cls()
@@ -345,7 +342,7 @@ def alive(self):
     def save(self, check_status=True):
         if check_status:
             self.state = self.engine_status(save=False)
-
+        self.verbose_name = getattr(self.get_engine_cls(), 'verbose_name', self.engine)
         return super(Provisioner, self).save()
 
 
@@ -375,6 +372,7 @@ class User(Model, metaclass=ModelMeta):
     created_at = DatetimeField()
     role = StringField(required=True)
     active = BoolField(required=True)
+    metadata = JSONField(required=False)
 
     @property
     def namespace(self):
diff --git a/kqueen/tests/test_models.py b/kqueen/tests/test_models.py
index 9a9be5af..7ecf28df 100644
--- a/kqueen/tests/test_models.py
+++ b/kqueen/tests/test_models.py
@@ -1,4 +1,4 @@
-from kqueen.engines.__init__ import __all__ as all_engines
+from kqueen.engines import __all__ as all_engines
 from kqueen.models import Cluster
 from kqueen.models import Provisioner
 from kqueen.storages.etcd import Field
diff --git a/setup.py b/setup.py
index 963f6d92..ce888583 100644
--- a/setup.py
+++ b/setup.py
@@ -2,7 +2,7 @@
 
 from setuptools import setup, find_packages
 
-version = '0.12'
+version = '0.13'
 
 with open('README.rst') as f:
     long_description = ''.join(f.readlines())