[TASK] Unwrap "Page TSconfig" info tree

In Info module, function "Page TSconfig" the information
tree is wrapped with a needless table. Removes the <table>.

Brings .nowrap class for broader use.

Change-Id: Idfb97b1b0b8251ae41c4fb8aab45788d1e25b865
Resolves: #48976
Releases: 6.2
Reviewed-on: https://review.typo3.org/21298
Reviewed-by: Markus Klein
Tested-by: Markus Klein
Reviewed-by: Wouter Wolters
Tested-by: Wouter Wolters
[TASK] Database analyzer: Enable add tables and add fields

Enable the check boxes for 'add tables' and 'add fields' in the
database analyzer by default. Adding is not risky and can be
suggested automatically.

Resolves: #49705
Related: #49162
Releases: 6.2

Change-Id: Ib3069a135f4baedc2bebf59ed5c42a72937fb897
Reviewed-on: https://review.typo3.org/21943
Reviewed-by: Wouter Wolters
Tested-by: Wouter Wolters
Reviewed-by: Anja Leichsenring
Tested-by: Anja Leichsenring
[FEATURE] Add checkFlexFormValue hook in DataHandler

Currently there is a problem with updating flexform values
right as there is no check if an existing value in the db
has actually been deleted.

This e.g. is a problem when it comes to saving switchable
controller actions (Extbase) in the flexform. Old actions
that may not be present any longer have to be removed
manually.

As there is currently no overall solution to this issue
there should at least be a hook to adjust the old flexform
data right before it is merged with the new one.

Releases: 6.2
Resolves: #49699
Change-Id: Ic93ffd7782b4d049070c6bd9ab760a01008242d6
Reviewed-on: https://review.typo3.org/21929
Reviewed-by: Wouter Wolters
Tested-by: Wouter Wolters
Reviewed-by: Anja Leichsenring
Tested-by: Anja Leichsenring