[WIP] 1.2.0-RC1

* [ ] add php 5.6 to .travis.yml
it is possible to have an array there, but the index will be used as locale: https://github.com/symfony-cmf/cmf-sandbox/blob/1.2/src/Sandbox/MainBundle/DataFixtures/PHPCR/LoadMenuData.php#L99

maybe we started validating something here. looks like this would actually be a bugfix we should also do in master.