* metametrics - ensure segment submission failures do not bubble up
* metametrics - differentiate between trackEvent and submitEvent
* metametrics - validate event in trackEvent
* metametrics - re-throw error on clean stack
* lint fix
* controllers/metametrics - take a captureException option
* controllers/metametrics - capture and report any errors in trackPage
* Update app/scripts/controllers/metametrics.js
Co-authored-by: Mark Stacey <markjstacey@gmail.com>
Co-authored-by: Mark Stacey <markjstacey@gmail.com>