- fix invalid HTML and some more cleanup
- allow to pass return_url to admin/applications/application-delete.tcl
- provide means for easier management of package instances
- replace tabs by spaces (white-space change)
- provide listing of app(s) to be deleted for confirmation
- provide ability to delete also unmounted packages from package-instances
- site-map: provide information about the package-key in listing of unmounted packages
- apm_package_instance_delete: fix bug when trying to delete an instance of a package which was disabled
- fix for bug #3069
- replace global statement by namespace qualifiers
- make summary required