[FEATURE] Add option to white/blacklist TYPO3 versions

[fsaris]

After last security releases of TYPO3 we got some installations that got patched instead of updated to a recognized secure version. We know that the version is secure (but still out-dated) and it would be a great addition to be able to white list such a version from the "not secure" list.

For instance we added a suffix to the original version like '6.2.x-76231'

[fsaris]

@georgringer maybe a hint how/where to implement this? Then I could give it a try

[georgringer]

The core record must be editable and could be checked there

[fsaris]

ah, that easy :) it worked.

would you accept a PR changing the TCA to make the core visible? Maybe add a nice icon with overlay when the core is insecure

[georgringer]

Yeah go ahead