[Task] Error Tracking - Add error tracking to catch errors

[g3d]

Summary:

In order to better catch and handle errors, it would be great to add error tracking.

Flow description

We should:

• pick up error tracking provider
• register app and add other contributors into it
• add gem and initializer for it
• configure slack channel for errors notifications
• deploy new release

Artifacts

Here is posible list of services:

• Airbrake
• Sentry
• Rollbar

Acceptance criteria:

• [ ] I, as the contributor, should be able to see notifications about errors in slack channel
• [ ] I, as the contributor, should be able to open notifications about errors from slack channel

[g3d]

@skrix @oxanayoxana need your feedback on that

[skrix]

As for me, looks great for a first task. Also, there is bugsnag as one more good option)

[andrzejkrzywda]

Let's go for bugsnag, as I have a commercial account for Arkency and I can setup the Slack integration for that project too.

[htuerker]

I'll work on that.

Also as a feature request, it might be good to have a modular exception/error handler to prevent ugly error blocks from business logic.