Script origins control inline policy, all scripts allowed for tab

SBrowser/Utilities/CGPoint+Utils.swift

@@ -22,4 +22,11 @@ extension CGRect
         
         return rect
     }
+    
+    public func centeredY(inRect: CGRect) -> CGRect {
+        var rect = self
+        rect.origin.y = CGRound((inRect.height - rect.height) / 2.0)
+        
+        return rect
+    }
 }

SBrowser/Utilities/UIEdgeInsets+Layout.swift

@@ -14,4 +14,11 @@ extension UIEdgeInsets
             return UIEdgeInsets(top: -top, left: -left, bottom: -bottom, right: -right)
         }
     }
+    
+    func subtracting(_ other: UIEdgeInsets) -> UIEdgeInsets {
+        return UIEdgeInsets(top: self.top - other.top,
+                            left: self.left - other.left,
+                            bottom: self.bottom - other.bottom,
+                            right: self.right - other.right)
+    }
 }