properly hide instructions in form metadata for definitions that have no instructions; previous logic to do so never worked.
moved common form javascript to formcommon.js from multiform.js
stop using meta tag for viewname in multi-record form JS, instead using html5-compliant data-viewname attribute on a now identified #formcore div
common view base class used for multi-record form view/entry and for flex forms; flex (simple) forms now show the same basic metadata as multi-record forms