[BUGFIX] Close extension configuration form on "Save and close"

Add the input field for the final action override in a pre-submit callback
to close the configuration form if a user clicks "Save and close".

Resolves: #71480
Releases: master
Change-Id: I30dcb329589f312b7cd23604078752fb4b84bc39
Reviewed-on: https://review.typo3.org/44682


Reviewed-by: Daniel Goerz <ervaude@gmail.com>
Tested-by: Daniel Goerz <ervaude@gmail.com>
Reviewed-by: Eric Chavaillaz <eric@hemmer.ch>
Tested-by: Eric Chavaillaz <eric@hemmer.ch>
Reviewed-by: Mathias Schreiber <mathias.schreiber@wmdb.de>
Tested-by: Mathias Schreiber <mathias.schreiber@wmdb.de>