- update/replace enter_test.cgi with complete management interface for testcases
- make all fields Essential in Litmus::DB::Testcase
- added new methods to Litmus::DB::Testcase: clone, delete_from_subgroups, delete_from_related, delete_with_refs, update_subgroups
- added ByTestgroup and ByTestcase sql lookups to Litmus::DB::Subgroup
- added order_by directives to has_many fields in Litmus::DB::Product
- added new Litmus::FormWidget functions getTestcases and getAuthors
- don't try to .select() select fields (FormValidation.js)
- add verifySelected function to FormValidation.ja
- update interface to use manage_testcase.cgi for editing testcases
- remove editing flags/interface from test.html.tmpl
