Logging all errors

[rgerkin]

All errors resulting from user activity (clicks etc.) and all simulator errors should be logged somewhere that we can check. This does not need to be sent back to the browser, i.e. it is a separate issue from #396, although it may rely on the same backend collection of Geppetto errors.

[ddelpiano]

@rgerkin this can be achieved with google analytics for what concern the frontend, this should take into account (and most likely come after) #396 so that we can rely this last to push all the errors to the console and keep track of them via analytics. Happy to discuss further this one if you want. (very quick investigation https://www.tatvic.com/blog/javascript-error-tracking-google-analytics-via-google-tag-manager-unsung-hero-2/ )

[zsinnema]

implemented sentry as an error catcher