Refactoring II.

- Filter by date range
- SyncUpdate tasks run fully asynchronous in background
- Move tableView manipulations into FilterPipelineDelegate
- Move SyncUpdate notification into SyncUpdateDelegate
- Fix: sync cache before persisting a recording
- Restructuring GroupedDomainDataSource
- Performance: db logs queries use rowids instead of timestamps
- Add 'now' button to DatePickerAlert

main/Extensions/String.swift

@@ -36,7 +36,7 @@ extension String {
 	}
 }
 
-var listOfSLDs: [String : [String : Bool]] = {
+private var listOfSLDs: [String : [String : Bool]] = {
 	let path = Bundle.main.url(forResource: "third-level", withExtension: "txt")
 	let content = try! String(contentsOf: path!)
 	var res: [String : [String : Bool]] = [:]