added autocomplete form mixin

Author: o-zander

Diff for: forms.py

@@ -0,0 +1,13 @@
+from django import forms
+
+
+class AutoCompleteMixin:
+    autocomplete = {}
+
+    def __init__(self, *args, **kwargs):
+        assert isinstance(self, forms.BaseForm)
+
+        super(AutoCompleteMixin, self).__init__(*args, **kwargs)
+
+        for field in set(self.fields) & set(self.autocomplete):
+            self.fields[field].widget.attrs['autocomplete'] = self.autocomplete[field]