Remove Beego tasks, make Importer available through DI

scanner/wire_providers.go

@@ -0,0 +1,9 @@
+package scanner
+
+import "github.com/google/wire"
+
+var Set = wire.NewSet(
+	NewImporter,
+	NewItunesScanner,
+	wire.Bind(new(Scanner), new(*ItunesScanner)),
+)