Cleaned up the creation of the GRDBStorage instance
Fixed an issue where the launch screen wasn't setting it's background colour based on the system setting
Renamed the GRDBStorageError to StorageError (in preparation of legacy 'Storage' relocation)
Consolidated the two Environment classes (in Swift)
Refactored the AppSetup class to Swift
Refactored the AppDelegate from Objective C to Swift
Updated the HomeVC to use GRDB
Refactored a number of the Job types to be driven via GRDB and the new JobRunner
Fixed a bug where the LinkPreviewView wouldn't render correctly in dark mode