Made FileFinder an alias to ClientFileFinder, using ClientFileFinder by default everywhere. Legacy FileFinder is still available as LegacyFileFinder. Fixed several inconsistencies in ClientFileFinder client action. Same for RegistryFinder.
Added StatMultipleFiles and HashMultipleFiles flows to be used in UIv2.
Collecting more detailed stats about flow errors.
Newly interrogated hunts now pick up active hunts automatically.