Rollback is not a verb.


git-svn-id: https://develop.svn.wordpress.org/trunk@25655 602fd350-edb4-49c9-b593-d223f7449a82
This error message should have a period.


git-svn-id: https://develop.svn.wordpress.org/trunk@25656 602fd350-edb4-49c9-b593-d223f7449a82
End sentences in periods. see #24982.


git-svn-id: https://develop.svn.wordpress.org/trunk@25657 602fd350-edb4-49c9-b593-d223f7449a82