[FEATURE] Module menu restyling

Restyle the module menu and prepare appicon support.

Resolves: #62995
Releases: master
Change-Id: Ic6a55c434b3cf13320c6b0417050d2cd273b531b
Reviewed-on: http://review.typo3.org/34216
Tested-by: Georg Ringer <georg.ringer@gmail.com>
Reviewed-by: Frank Nägler <typo3@naegler.net>
Tested-by: Frank Nägler <typo3@naegler.net>
Reviewed-by: Felix Kopp <felix-source@phorax.com>
Tested-by: Felix Kopp <felix-source@phorax.com>