Configuration data from database
Refactoring OrganizationConfiguration so that it runs validations gracefully and returns a list of errors
Preparation for runtime configuration reloading
Adding error
Small model adjustments
Wait a bit between retries
First (and biggest) step towards dynamic configuration management

The configuration state is now initialized and held by an actor. A two-step initialization mechanism is in place in order to bootstrap the configuration.

Resources that are configuration-dependent are linked to the configuration lifecycle by implementing an OrganizationConfigurationResourceHolder.
Merge pull request #813 from delving/13.02-database

First step towards dynamic configuration management