* Added de-norm counter migration for assets
* Renaming counter columns, since Eloquent has a magical *_count helper
* Added artisan command to sync counters (one-off)
* Update API to use de-normed fields
* Increment counters for checkin;/checkout
* Derp.
* Added request increment/decrementer
* Move increment for checkout to the Asset::checkout method
* Added “could take a while” message
