[BUGFIX] Fix phpDoc comment for addStaticFile()

The method
\TYPO3\CMS\Core\Utility\ExtensionManagementUtility::addStaticFile()
should be called in ext_tables.php files since it manipulates the
TCA.

Resolves: #51939
Releases: 6.2
Change-Id: I75f099fb5d64ee1e11867c41728b2747a666ebfd
Reviewed-on: https://review.typo3.org/23781
Reviewed-by: Christian Kuhn
Tested-by: Christian Kuhn
[TASK] Install tool: Refactor db connect configuration settings

Refactor needsExecution() logic to make sure the mandatory settings
(username, password, host, port) are present in LocalConfiguration.php
before trying to establish a database connection using these settings.

This fixes a possible redirect loop if some of the mandatory settings
were not present, but the database connection check still succeeded.

Change-Id: Ifbf98a4bdcb62d9d29b7fbc1f3a03d3a7d621492
Resolves: #51433
Releases: 6.2
Reviewed-on: https://review.typo3.org/23394
Reviewed-by: Stefan Neufeind
Tested-by: Stefan Neufeind
Reviewed-by: Markus Klein
Tested-by: Markus Klein
Reviewed-by: Anja Leichsenring
Tested-by: Anja Leichsenring
Reviewed-by: Christian Kuhn
Tested-by: Christian Kuhn
[BUGFIX] Installing TYPO3 -> Installing TYPO3 CMS

Use correct product name in title tag and box during installation.

Change-Id: I21141aa06c12c1abf7fff83e1e33148be6c6373f
Resolves: #51946
Releases: 6.2
Reviewed-on: https://review.typo3.org/23784
Reviewed-by: Christian Kuhn
Tested-by: Christian Kuhn
[BUGFIX] Install tool shows docheader in backend

Install tool should show a document header if called in backend.
It includes some .css files from t3skin to do that. Those files
were moved around in issue #51134, not adapted in install tool,
resulting in 404 and missing document header. The patch adapts
templates to include files at new locations.

Change-Id: I9df6950ec3e218c175b012d9ef4233c5b5f6c925
Resolves: #51952
Related: #51134
Releases: 6.2
Reviewed-on: https://review.typo3.org/23789
Reviewed-by: Christian Kuhn
Tested-by: Christian Kuhn