LPS-48169 Main.css does not exist in Kaleo Forms, Kaleo Forms Admin unusable

This reverts commit 5c4b470c1b4407e41670419c47861d82dee3372f.
LPS-48169 Fix tests?
LPS-48592 DefaultControlPanelEntryFactory Registry'fy
LPS-48592 SF
LPS-48592 the default one is the one without a 'javax.portlet.name' property defined (note: portlets are tracking their own instance)
LPS-48592 SF
LPS-48592 SF
LPS-48592 Sort
LPS-48592 Document that it's no longer used
LPS-48593 mail.util.Hook Registry'fy
LPS-48593 SF
LPS-48593 SF
LPS-48593 Document that it's no longer used
LPS-48568 Document that it's no longer used
LPS-48559 Document that it's no longer used
LPS-47970 Document that it's no longer used
LPS-47968 Document that it's no longer used
LPS-48379 Document that it's no longer used
LPS-47689 Document that it's no longer used
LPS-47688 Document that it's no longer used