[TASK] Remove radio buttons from "new content elements" overview

Remove radio buttons from "new content elements" as icons
serves the same purpose
Change-Id: Ibea517d19389ad2645d630b4416e7f45207faec7
Fixes: #38623
Releases: 6.1
Reviewed-on: https://review.typo3.org/12566
Reviewed-by: Oliver Hader
Tested-by: Oliver Hader
Reviewed-by: Georg Ringer
Tested-by: Georg Ringer
[BUGFIX] Fix call to strpos to find port number

With the introduction of lazy database loading we introduced
a bug for database host strings with a port number. This patch
fixes the call to strpos() by switching the arguments.

Fixes: #47221
Releases: 6.1
Related: #46880
Change-Id: I1da875b7be531929f96f3496e6a1357638a80305
Reviewed-on: https://review.typo3.org/19978
Reviewed-by: Markus Klein
Tested-by: Markus Klein
Reviewed-by: Felix Kopp
Reviewed-by: Christian Kuhn
Tested-by: Christian Kuhn
[BUGFIX] Extbase must not use legacy flash message handling

Since the core introduced a new flash message handling the
handling in Extbase has to be adjusted as well.

Also introduces a compat layer.

Releases: 6.1
Resolves: #47196
Change-Id: I4dbee79e9181c5ecbece4549039114f58ea6f33a
Reviewed-on: https://review.typo3.org/19944
Reviewed-by: Alexander Schnitzler
Tested-by: Alexander Schnitzler