[TASK] Render Typoscript Object Browser tree through CSS

Render the Typoscript Object Browser with unordered lists and CSS.

Resolves: #65953
Releases: master
Change-Id: Ifaa4193fee9ff7796130aed3055a782eb5a65795
Reviewed-on: http://review.typo3.org/38067


Reviewed-by: Helmut Hummel <helmut.hummel@typo3.org>
Tested-by: Helmut Hummel <helmut.hummel@typo3.org>
Reviewed-by: Nicole Cordes <typo3@cordes.co>
Tested-by: Nicole Cordes <typo3@cordes.co>
Reviewed-by: Benjamin Mack <benni@typo3.org>
Tested-by: Benjamin Mack <benni@typo3.org>