removes unused edit_handler, adds future imports

src/personalisation/admin.py

@@ -1,3 +1,5 @@
+from __future__ import absolute_import, unicode_literals
+
 from django.contrib import admin
 
 from personalisation import models

src/personalisation/edit_handlers.py

@@ -1,20 +0,0 @@
-from django import forms
-from django.forms import HiddenInput
-from django.utils.safestring import mark_safe
-
-
-class ReadOnlyWidget(forms.Select):
-    """
-    Render the original field as a hidden widget.
-    And create a text display for the label
-    """
-    def __init__(self, text_display, *args, **kwargs):
-        self.text_display = text_display
-        self.initial_widget = HiddenInput()
-        super(ReadOnlyWidget, self).__init__(*args, **kwargs)
-
-    def render(self, *args, **kwargs):
-        original_content = self.initial_widget.render(*args, **kwargs)
-
-        return mark_safe("""<span class="hidden">%s</span>%s""" % (
-            original_content, self.text_display))

src/personalisation/wagtail_hooks.py

@@ -1,3 +1,5 @@
+from __future__ import absolute_import, unicode_literals
+
 import logging
 import time