Update jQuery to 1.11.1 for Vellum

This includes updating jquery-ui to 1.11.2
Uses jquery-migrate to get support for old things like $.browser
Limit use of jQuery 1.11 et al to formdesigner
Merge branch 'master' into vellum-jquery-upgrade
Update to vellum:12b5ff1
Merge pull request #4671 from dimagi/vellum-jquery-upgrade

Update jQuery to 1.11.1 for Vellum