* Add test case for conflicting both with `--dev` and without
* Implement interactive case
* Restrcture so that interactive case is actually interactive
I don't know why specifying `'--no-interaction' => !$isInteractive,`
didn't give the desired behavior of the prompt being interactive.
You can verify that by printing the `$appTester->getDisplay()` which
doesn't contain a prompt. In fact, it doesn't make any difference
whether I set it to true or false. The only difference is if I set it
or don't set it.
* Fix dreaded trainling comma