[BUGFIX] Correct paths to assets

[TASK] Reinstall npm package copy-props

[FEATURE] Handling typo3/cms-composer-installers:v4

* [BUGFIX] Remove breaking git merge lines

* [BUGFIX] Remove some array key warnings due to PHP8

Fix container class around content elements

Full support for v11

* [BUGFIX] Fix 404 for ajax-loader.gif of slick slider
* [TASK] Add form-check-input class to multi checkbox of form

* [BUGFIX] Remove action parameter in login form to do correct redirect

* [FEATURE] Add EXT:trusted_url_params

* [FEATURE] Add loading div during AJAX requests like login/logout etc.
* [TASK] Change layout to correct orange color
* [TASK] Update to bootstrap 4.6.0
* [BUGFIX] Show crop information for slider items