Disable smart quotes and smart dashes on legacy editor.

Author: SergioEstevao

Classes/WPLegacyEditorViewController.m

@@ -202,6 +202,11 @@ - (void)setupTextView
         self.textView.font =  self.bodyFont;
         self.textView.textColor = self.bodyColor;
         self.textView.accessibilityLabel = NSLocalizedString(@"Content", @"Post content");
+
+        if (@available(iOS 11.0, *)) {
+            self.textView.smartQuotesType = UITextSmartQuotesTypeNo;
+            self.textView.smartDashesType = UITextSmartDashesTypeNo;
+        }
     }
     [self.view addSubview:self.textView];