adds "Open In App Browser" shortcut

iOS/Article/ArticleViewController.swift

@@ -256,6 +256,7 @@ class ArticleViewController: UIViewController {
 	}
 	
 	// MARK: Keyboard Shortcuts
+
 	@objc func navigateToTimeline(_ sender: Any?) {
 		coordinator.navigateToTimeline()
 	}
@@ -277,7 +278,10 @@ class ArticleViewController: UIViewController {
 	func stopArticleExtractorIfProcessing() {
 		currentWebViewController?.stopArticleExtractorIfProcessing()
 	}
-	
+
+	func openInAppBrowser() {
+		currentWebViewController?.openInAppBrowser()
+	}	
 }
 
 // MARK: WebViewControllerDelegate

iOS/Article/WebViewController.swift

@@ -226,7 +226,15 @@ class WebViewController: UIViewController {
 		activityViewController.popoverPresentationController?.barButtonItem = popOverBarButtonItem
 		present(activityViewController, animated: true)
 	}
-	
+
+	func openInAppBrowser() {
+		guard let preferredLink = article?.preferredLink, let url = URL(string: preferredLink) else {
+			return
+		}
+
+		let vc = SFSafariViewController(url: url)
+		present(vc, animated: true)
+	}
 }
 
 // MARK: ArticleExtractorDelegate