- bump version number of bootstrap to 3.4.1- use jquery 3.4.0- use URN for jquery (one should probably create a own jquery package, although, jquery is losing it importance)- make use of new "create_or_replace" feature of acs-subsite
added "create_or_replace" flag to subsite::new_subsite_themeThis feature is similar to the "create or replace" idiom for updatingSQL functions and eases the update of standard themes
revert "-version" change since- appending the version to the URL is a hack, not compatible with other versioning approaches- it is not compatible with resource URNs,- a more complex version managemnt is needed when dealing with multiple versions in an installation.