Introduced a mechanism to load required javascripts at runtime

(lazy loading) using the require.js. This allows us to load the
javascript required for any node, only when it was loaded in the browser
tree. Also, introduced the mechanism to show/edit/create of any node in
a tab panel (wcDocker.Panel).

web/pgadmin/utils/__init__.py

@@ -1,10 +1,18 @@
+##########################################################################
+#
+# pgAdmin 4 - PostgreSQL Tools
+#
+# Copyright (C) 2013 - 2015, The pgAdmin Development Team
+# This software is released under the PostgreSQL Licence
+#
+##########################################################################
+
 from flask import Blueprint
 from collections import defaultdict
 from operator import attrgetter
 import sys
 
 
-
 class PgAdminModule(Blueprint):
     """
     Base class for every PgAdmin Module.

web/pgadmin/utils/ajax.py

@@ -9,13 +9,25 @@
 
 """Utility functions for dealing with AJAX."""
 
-from flask import jsonify
+from flask import Response
 import json
 
-def make_json_response(success=True, **kwargs):
+def make_json_response(success=1, errormsg='', info='', result=None, data=None, status=200):
     """Create a HTML response document describing the results of a request and
     containing the data."""
-    response = kwargs.copy()
-    response.setdefault('result', {})
-    response.setdefault('data', {})
-    return jsonify(response)
+    doc = dict()
+    doc['success'] = success
+    doc['errormsg'] = errormsg
+    doc['info'] = info
+    doc['result'] = result
+    doc['data'] = data
+
+    return Response(response=json.dumps(doc),
+                        status=status,
+                        mimetype="text/json")
+
+def make_response(response=None, status=200):
+    """Create a JSON response handled by the backbone models."""
+    return Response(response=json.dumps(response),
+                        status=status,
+                        mimetype="text/json")

web/pgadmin/utils/menu.py

@@ -1,3 +1,12 @@
+##########################################################################
+#
+# pgAdmin 4 - PostgreSQL Tools
+#
+# Copyright (C) 2013 - 2015, The pgAdmin Development Team
+# This software is released under the PostgreSQL Licence
+#
+##########################################################################
+
 from collections import namedtuple
 
 PRIORITY = 100
@@ -10,16 +19,19 @@ class MenuItem(object):
 class Panel(object):
 
     def __init__(self, name, title, content, width=500, height=600, isIframe=True,
-                 showTitle=True, isCloseable=True, isPrivate=False, priority=None):
+                 showTitle=True, isCloseable=True, isPrivate=False, priority=None,
+                 icon=None, data=None):
         self.name = name
         self.title = title
         self.content = content
         self.width = width
         self.height = height
-        self.isIfframe = isIframe
+        self.isIframe = isIframe
         self.showTitle = showTitle
         self.isCloseable = isCloseable
         self.isPrivate = isPrivate
+        self.icon = icon
+        self.data = None
         if priority is None:
             global PRIORITY
             PRIORITY += 100