[!!!][BUGFIX] EXT:form - Form attributes are not rendered in FE

Let the frontend render all the attributes one  can set within the
wizard. Also remove unnecessary attributes which make no sense for the
specific form element.

Resolves: #70444
Releases: master
Change-Id: I350af9cf3f6707ff66e7f90cece8beab2faf1f07
Reviewed-on: http://review.typo3.org/43885


Reviewed-by: Bjoern Jacob <bjoern.jacob@tritum.de>
Tested-by: Bjoern Jacob <bjoern.jacob@tritum.de>
Reviewed-by: Wouter Wolters <typo3@wouterwolters.nl>
Tested-by: Wouter Wolters <typo3@wouterwolters.nl>