Add watchdog timeout value to process model
Merge pull request #10 from strongloop/feature/watchdog_timeout

Add watchdog timeout value to process model
Move action, process, profile models to instance

* Change Action, ProfileData, ServiceProcess models to have string ID
* Create String IDs instead of using autogenerated numeric IDs
* Make foreign keys to ServiceInsance consistent (serviceInstanceId)
* Add relation between ServiceProcess and ProfileData