* Fix many things. Few more samples left to fix
* Fix all the samples
* Introduce service configurator
* Implement cache signaling and refreshing workflow registry
* Add Sample16 demonstrating dashboard + workflow host combined
* Bugfix where non-published versions of worklows are triggered
* Fix StringValues serialization and rename WorkflowDefinition to WorkflowDefinitionVersion
* Fix Singleton issue and add support for absolute URL using base URL for background tasks
* Fix persistence and lifetime scope issues
* Fix timer bugs
* Various bug fixes
