Feature #88129

Updated by Sven Proffe 3 months ago

Rename old flexform keys (e.g. 'showForgotPassword' => 'settings.showForgotPassword') so that they can be used by extbase plugin.

* Adapt flexform file
* Make old piBase plugin read the new structure
* Write upgrade wizard to migrate exisiting tt_content record sets of felogin from old ff keys to new