Albums page: remember last sort order

sharedutil/sharedutil.go

@@ -2,6 +2,15 @@ package sharedutil
 
 import "github.com/dweymouth/go-subsonic/subsonic"
 
+func StringSliceContains(slice []string, str string) bool {
+	for _, s := range slice {
+		if s == str {
+			return true
+		}
+	}
+	return false
+}
+
 func FindTrackByID(id string, tracks []*subsonic.Child) *subsonic.Child {
 	for _, tr := range tracks {
 		if id == tr.ID {