[TASK] Raise version to 1.3.0-dev

Change-Id: Ib77cf8af6e8a97949e9f0e76fb039dc76a68f169
Reviewed-on: http://review.typo3.org/35044
Reviewed-by: Xavier Perseguers <xavier@typo3.org>
Tested-by: Xavier Perseguers <xavier@typo3.org>