Move the core events to nova/start
Move core filters to nova/start
Update the docblock in the app routes file
Move the core helpers to nova/start
Move back to the L4 string class

We've moved the methods from the class to be macros instead.
Add macros during startup
Test routes
Fix error thrown from base model

I'm not sure if Laravel added an update method because this wasn't
throwing errors before. Will have to figure something out here...