diff --git a/.gitignore b/.gitignore
index 57f9d0eab..bd904efc9 100644
--- a/.gitignore
+++ b/.gitignore
@@ -1,6 +1,5 @@
 *.pyc
 .DS_Store
-/.ropeproject/
 /.coverage
 /dist/
 /MANIFEST
diff --git a/wagtail/wagtailadmin/edit_handlers.py b/wagtail/wagtailadmin/edit_handlers.py
index 7bbead9b1..a15440016 100644
--- a/wagtail/wagtailadmin/edit_handlers.py
+++ b/wagtail/wagtailadmin/edit_handlers.py
@@ -1,4 +1,6 @@
 import copy
+import re
+import datetime
 
 from taggit.forms import TagWidget
 from modelcluster.forms import ClusterForm, ClusterFormMetaclass
@@ -7,13 +9,13 @@ from django.template.loader import render_to_string
 from django.template.defaultfilters import addslashes
 from django.utils.safestring import mark_safe
 from django import forms
+from django.db import models
 from django.forms.models import fields_for_model
 from django.contrib.contenttypes.models import ContentType
-from django.core.exceptions import (
-    ObjectDoesNotExist,
-    ImproperlyConfigured,
-)
+from django.core.exceptions import ObjectDoesNotExist, ImproperlyConfigured, ValidationError
 from django.core.urlresolvers import reverse
+from django.conf import settings
+from django.utils.translation import ugettext as _
 from django.utils.translation import ugettext_lazy
 
 from wagtail.wagtailcore.models import Page
@@ -36,8 +38,7 @@ WIDGET_JS = {
 }
 
 
-# Callback to allow us to override the default form fields provided
-# for each model field.
+# Callback to allow us to override the default form fields provided for each model field.
 def formfield_for_dbfield(db_field, **kwargs):
     # snarfed from django/contrib/admin/options.py
 
@@ -55,13 +56,13 @@ def formfield_for_dbfield(db_field, **kwargs):
 class WagtailAdminModelFormMetaclass(ClusterFormMetaclass):
     # Override the behaviour of the regular ModelForm metaclass -
     # which handles the translation of model fields to form fields -
-    # to use our own formfield_for_dbfield function to do that
-    # translation. This is done by sneaking a formfield_callback
-    # property into the class being defined (unless the class already
-    # provides a formfield_callback of its own).
+    # to use our own formfield_for_dbfield function to do that translation.
+    # This is done by sneaking a formfield_callback property into the class
+    # being defined (unless the class already provides a formfield_callback
+    # of its own).
 
-    # while we're at it, we'll also set extra_form_count to 0, as
-    # we're creating extra forms in JS
+    # while we're at it, we'll also set extra_form_count to 0, as we're creating
+    # extra forms in JS
     extra_form_count = 0
 
     def __new__(cls, name, bases, attrs):
@@ -78,8 +79,8 @@ WagtailAdminModelForm = WagtailAdminModelFormMetaclass('WagtailAdminModelForm',
 
 
 def get_form_for_model(
-    model, fields=None, exclude=None, formsets=None,
-    exclude_formsets=None, widgets=None
+    model,
+    fields=None, exclude=None, formsets=None, exclude_formsets=None, widgets=None
 ):
 
     # django's modelform_factory with a bit of custom behaviour
@@ -93,8 +94,7 @@ def get_form_for_model(
     if exclude is not None:
         attrs['exclude'] = exclude
     if issubclass(model, Page):
-        attrs['exclude'] = attrs.get('exclude', []) + ['content_type', 'path',
-                                                       'depth', 'numchild']
+        attrs['exclude'] = attrs.get('exclude', []) + ['content_type', 'path', 'depth', 'numchild']
 
     if widgets is not None:
         attrs['widgets'] = widgets
@@ -111,9 +111,7 @@ def get_form_for_model(
         'Meta': type('Meta', (object,), attrs)
     }
 
-    return WagtailAdminModelFormMetaclass(class_name,
-                                          (WagtailAdminModelForm,),
-                                          form_class_attrs)
+    return WagtailAdminModelFormMetaclass(class_name, (WagtailAdminModelForm,), form_class_attrs)
 
 
 def extract_panel_definitions_from_model_class(model, exclude=None):
@@ -128,8 +126,7 @@ def extract_panel_definitions_from_model_class(model, exclude=None):
     if issubclass(model, Page):
         _exclude = ['content_type', 'path', 'depth', 'numchild']
 
-    fields = fields_for_model(model, exclude=_exclude,
-                              formfield_callback=formfield_for_dbfield)
+    fields = fields_for_model(model, exclude=_exclude, formfield_callback=formfield_for_dbfield)
 
     for field_name, field in fields.items():
         try: