[TASK] Verify compatibility with TYPO3 6.2

Make sure the extension works fine with TYPO3 CMS 6.2,
while keeping compatibility down to 4.5.

Resolves: #57532
Releases: 1.5
Change-Id: I1d9bc70c8049491f48262f4f88349eb5807d98ba
Reviewed-on: https://review.typo3.org/29097
Reviewed-by: Francois Suter
Tested-by: Francois Suter