Validates length of key
Merge pull request #14 from sgeorgi/master

Upgraded to Rails 4.1.1, adapted changes in redirect_to notice argument
Merge branch 'master' of github.com:iboard/yarb
Set broken test to pending

  The test is about changing the key of a Store-object.
  Because this was a bad idea, we should get rid of this feature,
  anyways. This test may then disappears completely.