Progress: Continue working on completing the remove program.

Progress: Continue working on completing the remove program.

I forgot to perform the `git add` for the previous commit bf990a10a2c24f6304bb04dc2569765abb5b2347.

This includes changes that were supposed to be in that commit.

Add file type based program unit tests.
Add user based program unit tests.
Add group based program unit tests.

Fix bug exposed by the program unit tests where the id tests are only being performed as a group test even when it needs to be a user test.
This is fixed by creating and passing the `is_user` boolean to the functions.

Fix bug exposed by the program unit tests where the `--same` and `--different` boolean logic is reversed resulting in `--same` removing for different users and `--different` removing for the same user.