Resolved few intialization issue with Node model data, moved the

privileges functionality out of the backform.pgadmin.js to make it more
modular. Now - privileges will expect the privileges data in following
format:
<name_of_the_property> : [{
    "privileges": [{
        "privilege_type": <privilege_type>,
        "privilege": true,
        "with_grant": false
    },
    ...
    ],
    "grantee": <grantee>,
    "grantor": <grantor>
    },
   ...
]

Example:
acl": [{
    "privileges": [{
        "privilege_type": "CONNECT",
        "privilege": true,
        "with_grant": false
     	}],
    "grantee": '',
    "grantor": 'ashesh'
},{
    "privileges": [{
        "privilege_type": "CREATE",
        "privilege": true,
        "with_grant": false
    },{
        "privilege": true,
        "privilege_type": "TEMPORARY",
        "with_grant": false
    }],
    "grantee": test,
    "grantor": ashesh
}]

web/pgadmin/browser/utils.py

@@ -57,6 +57,7 @@ class PGChildModule:
     def __init__(self, *args, **kwargs):
         self.min_ver = 1000000000
         self.max_ver = 0
+        self.server_type = None
         self.attributes = {}
 
         super(PGChildModule, self).__init__(*args, **kwargs)