* streamline initialization of test databases, support on-disk sqlite test db
* clean up test databases
* introduce testsuite helper
* use testsuite everywhere we use a test db
* update documentation
* improve error handling
* disable entity integration test until we can figure out locking error
* Remove Result field from AddDataSourceCommand
* Remove DatasourcesPermissionFilterQuery Result
* Remove GetDataSourceQuery Result
* Remove GetDataSourcesByTypeQuery Result
* Remove GetDataSourcesQuery Result
* Remove GetDefaultDataSourceQuery Result
* Remove UpdateDataSourceCommand Result