[BUGFIX] Simplify UX in Workspace Module

Some minor remarks are changed within the Workspace
Module (ReviewController).

- The preview link in docheader now has a text (makes it readable for newcomers)
- The checkboxes are now in the first column
- The modal box is bigger for increased readability

Resolves: #88151
Releases: master, 9.5
Change-Id: I2bbc581d73b0263d77029c533381c52f527dac42
Reviewed-on: https://review.typo3.org/c/Packages/TYPO3.CMS/+/60476


Tested-by: Daniel Goerz <daniel.goerz@posteo.de>
Tested-by: TYPO3com <noreply@typo3.com>
Tested-by: Georg Ringer <georg.ringer@gmail.com>
Tested-by: Benni Mack <benni@typo3.org>
Reviewed-by: Daniel Goerz <daniel.goerz@posteo.de>
Reviewed-by: Georg Ringer <georg.ringer@gmail.com>
Reviewed-by: Benni Mack <benni@typo3.org>