added the acs_user::get_by_username proc and the permanent switch to acs_user::delete that serves as a wrapper around the acs_user.delete plsql proc. Unfortunately that proc doesn't seem to work reliably
moving generally useful user_search query from bug tracker into the core so that it can be reused with db_map for example in a form builder search widget (reference it with dbqd.acs-tcl.tcl.community-core-procs.user_search)