Thin SwiftLint ruleset (#704)

* Thin SwiftLint ruleset

* Disabled trailing_whitespace rule

Classes/Utility/UIAlertController+Action.swift

@@ -9,17 +9,17 @@
 import UIKit
 
 extension UIAlertController {
-    
+
     func addActions(_ actions: [UIAlertAction?]) {
         for anAction in actions {
             self.add(action: anAction)
         }
     }
-    
+
     func add(action: UIAlertAction?) {
         if let action = action {
             self.addAction(action)
         }
     }
-    
+
 }