Trimming form-data prevents common errors with copied
spaces, tabs or linebreaks in the formfields.

Change-Id: Id1ead90ef405c2c944f4c30e1e61e63597355b79
Resolves: #64229
Releases: master
Reviewed-on: http://review.typo3.org/35943


Reviewed-by: Anja Leichsenring <aleichsenring@ab-softlab.de>
Tested-by: Anja Leichsenring <aleichsenring@ab-softlab.de>
Reviewed-by: Mathias Schreiber <mathias.schreiber@wmdb.de>
Tested-by: Mathias Schreiber <mathias.schreiber@wmdb.de>