[TASK] Move Help module in Topbar

Move Help documentation to a more prominent place in
the backend. Also clears the way to increase the module
menu item height for finger.

Resolves: #62904
Releases: master
Change-Id: I4d721cb8dadfb445df94dd8fd7cd2eded2938bc2
Reviewed-on: http://review.typo3.org/34175
Reviewed-by: Thorsten Griebenow <griebenow@alltagsaesthetisierung.de>
Tested-by: Thorsten Griebenow <griebenow@alltagsaesthetisierung.de>
Reviewed-by: Christian Kuhn <lolli@schwarzbu.ch>
Tested-by: Christian Kuhn <lolli@schwarzbu.ch>