Make Applications extend LiskDAO

Summary:
Ref T11476. This is a bit hacky, but makes Application extend LiskDAO so we can apply transactions to it with an Editor class.

Also fixes schema stuff so builds should produce a clean bill of health again.

This might only get you slightly further, yell if you run into more trouble.

Test Plan:

• Ran bin/storage upgrade -f and got no warnings.
• Browsed around, nothing exploded?

Reviewers: amckinley

Reviewed By: amckinley

Maniphest Tasks: T11476

Differential Revision: https://secure.phabricator.com/D17738