[BUGFIX] Fix HTML tags in tstemplate

This resolves a broken HTML tag in tstemplate and also adds a unit
to a CSS margin declaration.

Resolves: #68372
Releases: master
Change-Id: I2c80384726dbd37c4c982f69c3e269c93dac2700
Reviewed-on: http://review.typo3.org/41713


Reviewed-by: Daniel Goerz <ervaude@gmail.com>
Reviewed-by: Frederic Gaus <frederic.gaus@flagbit.de>
Reviewed-by: Hans Mayer <hans.mayer83@gmail.com>
Reviewed-by: Markus Klein <markus.klein@typo3.org>
Tested-by: Markus Klein <markus.klein@typo3.org>
Reviewed-by: Wouter Wolters <typo3@wouterwolters.nl>
Tested-by: Wouter Wolters <typo3@wouterwolters.nl>