mod_menu: use short title; absolute positioning of item buttons.
mod_admin_frontend: minor textual changes, add dutch translation
mod_menu: show warning when a resource is unpublished.
mod_admin/mod_menu: added option so pass tab to connect/new dialog.
mod_admin_frontend: set default connect tab to 'new'
mod_admin_frontend: preselect the 'text' category for page linking.