[!!!][TASK] Drop disableBigButtons in page module

Disabling the by default enabled disableBigButtons TSconfig option
disables the option_showBigButtons property of PageLayoutView, so
some funny buttons in page module top bar and some misplaced buttons
to edit rte elements are enabled.

Easy, isn't it?!

This option is dropped now.

Resolves: #68020
Releases: master
Change-Id: Ifea0cebac3a4f1e5c23a54e2acb5aba26a83998d
Reviewed-on: http://review.typo3.org/41063


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>