Event feature testing

[ziggabyte]

Description

This PR started out as working on #1994 but evolved into the start of a way to test whole features. This is not a complete test suite that covers all states and situations an event goes through, but it is a beginning to figuring out ways to make hour hooks and stores testable together.

Screenshots

Behold the glorious absence of spinner 😅

Changes

• Adds tests for creating, updating and deleting an event
• Adds a file of test utils
• Adds timestamps for when an event item and list were loaded
• Changes the return type of the useEvent hook to return null when the requested event is deleted
• Changes the useEventsFromDateRange hook to become testable by taking in orgId and campId instead of using useNumericRouteParams (no router to get params from inside the test heh)

Notes to reviewer

none

Related issues

Resolves #1994 (once and for all, hopefully)

[richardolsson]

Awesome work! I have no required changes, but some suggestions below. 💯

[richardolsson]

I have looked at the recent changes and they look good. I think it's time to merge!