Added a new attribute - display_choices

to Column class, for substituting the
display value of the statuses provided
by Nova to some more meaningful ones
in the instance table.

Fixes bug 997374

Change-Id: I18560868435b4cbc42670e3fc9c0bc83ebf9fda4

horizon/utils/filters.py

@@ -0,0 +1,19 @@
+# vim: tabstop=4 shiftwidth=4 softtabstop=4
+
+# Copyright 2012 Nebula, Inc.
+#
+#    Licensed under the Apache License, Version 2.0 (the "License"); you may
+#    not use this file except in compliance with the License. You may obtain
+#    a copy of the License at
+#
+#         http://www.apache.org/licenses/LICENSE-2.0
+#
+#    Unless required by applicable law or agreed to in writing, software
+#    distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
+#    WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
+#    License for the specific language governing permissions and limitations
+#    under the License.
+
+
+def replace_underscores(string):
+    return string.replace("_", " ")