Use Draft4 JSON Schema for both v3 and v4

no longer need jsonpointer

IPython/testing/iptestcontroller.py

@@ -218,7 +218,7 @@ def all_js_groups():
 class JSController(TestController):
     """Run CasperJS tests """
     requirements =  ['zmq', 'tornado', 'jinja2', 'casperjs', 'sqlite3',
-                     'jsonschema', 'jsonpointer']
+                     'jsonschema']
     display_slimer_output = False
 
     def __init__(self, section, xunit=True, engine='phantomjs'):

setup.py

@@ -275,7 +275,7 @@ extras_require = dict(
     doc = ['Sphinx>=1.1', 'numpydoc'],
     test = ['nose>=0.10.1'],
     terminal = [],
-    nbformat = ['jsonschema>=2.0', 'jsonpointer>=1.3'],
+    nbformat = ['jsonschema>=2.0'],
     notebook = ['tornado>=3.1', 'pyzmq>=2.1.11', 'jinja2', 'pygments', 'mistune>=0.3.1'],
     nbconvert = ['pygments', 'jinja2', 'mistune>=0.3.1']
 )

setupbase.py

@@ -194,7 +194,10 @@ def find_package_data():
                 'preprocessors/tests/files/*.*',
             ],
         'IPython.nbconvert.filters' : ['marked.js'],
-        'IPython.nbformat' : ['tests/*.ipynb','v3/v3.withref.json']
+        'IPython.nbformat' : [
+            'tests/*.ipynb',
+            'v3/nbformat.v3.schema.json',
+            ]
     }
     
     return package_data