Error handling UI

[srallen]

No description provided.

[mcbouslog]

is this initially adding appropriate notifications throughout the app, similar to the collaborator error catch?

[rogerhutchings]

Side note - this may be an opportunity to try addressing zooniverse/rfc#20 with Honeybadger.

[srallen]

There is a UI now, thanks to grommet, but I went through and generically added a handler to almost much all the promise catches. There may be some instances where we don't need to report all the errors (like when a 404 is expected) or cases where the app notification should appear when we need to inform the user of something (such as a warning or success state for a change maybe?).

It'd be a good idea to add Honeybadger too, but that's for us, not for the user.