Adds support for dark mode

AltStore/Settings/SettingsViewController.swift

@@ -52,6 +52,10 @@ class SettingsViewController: UITableViewController
     
     @IBOutlet private var backgroundRefreshSwitch: UISwitch!
     
+    override var preferredStatusBarStyle: UIStatusBarStyle {
+        return .lightContent
+    }
+    
     required init?(coder aDecoder: NSCoder)
     {
         super.init(coder: aDecoder)