[TASK] Make use of .t3-table in EXT: wizard_sortpages

Use <table class="t3-table"> in backend module.
Also removes few markups and improves CGL compliancy.

Change-Id: I4f53affc0a6130965d8c3dc516ed800bc5094f50
Resolves: #55131
Releases: 6.2
Reviewed-on: https://review.typo3.org/26926
Reviewed-by: Philipp Gampe
Tested-by: Philipp Gampe
Reviewed-by: Wouter Wolters
Tested-by: Wouter Wolters