Upgrade to Laravel 5.4

This plugin is unfortunately no longer backwards compatible, and trying to add backwards compatibility proved to be difficult to maintain and very time-consuming. So for now, we will try to maintain backward compatibility where possible as we move forward with newer Laravel releases, but won't guarantee it.

Added

• Laravel 5.4 compatibility.
• automatic policy detection, making Entity seeding unnecessary.
• automatic adding of created_by column in tables, regardless of models.
• PHPCI integration.
• initial set of tests, with more to come.
• config file documentation.

Fixed

• role editing form.

Changed

• views to use the projects master layout file and be easier to publish.
• config settings to be more appropriate.
• controllers and models with PHP7 stuff and general clean up.
• routes to use dedicated folder.
• traits to use dedicated folder.
• policies to be much more concise, no methods needed.
• config variables to be more consistent.
• updated README documentation.