Open Kilo development

Bump pre-version to 2015.1 to formally open master branch to Kilo
development.

Change-Id: I1c74b3b16a340550b542bfff6260c09a190f1b65

setup.cfg

@@ -1,5 +1,6 @@
 [metadata]
 name = group-based-policy-ui
+version = 2015.1
 summary = Horizon modules for Group Based Policy
 description-file =
     README.rst
@@ -44,4 +45,4 @@ input_file = gbpui/locale/group-based-policy-ui.pot
 [extract_messages]
 keywords = _ gettext ngettext l_ lazy_gettext
 mapping_file = babel.cfg
-output_file = gbpui/locale/group-based-policy-ui.pot
+output_file = gbpui/locale/group-based-policy-ui.pot