Add GlitchTip to staging and production environments

[suecarmol]

Description

Added GlitchTip integration to the staging and production environments.

Rationale

We are expecting more users in the application once the Echo notification is rolled out. Setting up an exception logging service will help us monitor and debug any errors we encounter more efficiently.

Phabricator Ticket

T262931

How Has This Been Tested?

Deploying the changes to staging and navigating to a view that has an error on it.

Screenshots of your changes (if appropriate):

Types of changes

What types of changes does your code introduce? Add an x in all the boxes that apply:

• Bug fix (non-breaking change which fixes an issue)
• New feature (non-breaking change which adds functionality)
• Breaking change (fix or feature that would cause existing functionality to not work as expected)

[jsnshrmn]

We'll want to keep DEFAULT_FROM_EMAIL for non-error email sending and set it to the current value of SERVER_EMAIL which can still be dropped. Otherwise this is ready to merge!

[suecarmol]

Done! Thanks for pointing that out :)