Fixed problems with repository creation

rhodecode/model/repo.py

@@ -50,8 +50,10 b' class RepoModel(BaseModel):'
         except:
             self._base_path = None
 
+        super(RepoModel, self).__init__(sa)
+
         @property
-        def base_path():
+    def base_path(self):
             if self._base_path is None:
                 raise Exception('Base Path is empty, try set this after'
                                 'class initialization when not having '