Types of changes

Thanks to @ilandikov for pairing on this to help me get it to the finishing line.

Internal changes:

• Refactor (prefix: refactor - non-breaking change which only improves the design or structure of existing code, and making no changes to its external behaviour)
• Tests (prefix: test - additions and improvements to unit tests and the smoke tests)

Description

1. Clearly divide up the responsibilities for checking whether 2 objects have identical content.
2. Remove from Task and fields that are now also present in ListItem.

Motivation and Context

With the addition of ListItem, we had ended up with some overlap in the responsibilities of:

• ListItem.identicalTo()
• Task.identicalTo()

This PR adds equivalent methods to TasksFile and TaskLocation, so that each layer is responsible for checking its own fields.

How has this been tested?

Automated tests.

Checklist

• My code follows the code style of this project and passes yarn run lint.
• My change has adequate Unit Test coverage.

Terms

• My contribution follows this project's contributing guide
• I agree to follow this project's Code of Conduct