Reader: Second batch of changes (#24446)

* Configure screens dynamically

* Add Reader-specific sidebar

* Rename ReaderLibraryViewController

* Implement ReaderLibraryViewController using Sidebar

* Use ReaderPresenter to show Library

* Make sidebar always visible

* Remove unused code

* Update background in Me tab

* Simplify MeHeaderView in Reader

* Disable large titles for tags

* Fix ghost on Discover/Home

* Enable new editor by default

* Enable Blaze and update About

* Nicer background on login page

* Disable self-hosted sites in Reader

* Fix SwiftLint warnings

* Rename to isReaderModeEnabled

* Fix SwiftLint

Author: kean

WordPress/Classes/Apps/Reader/Following/ReaderFollowingSubscriptionsView.swift

@@ -7,16 +7,14 @@ final class ReaderProfileViewController: UIViewController {
         super.viewDidLoad()
 
         let mySiteVC = MySiteViewController()
-        mySiteVC.isReaderModeEnabled = true
+        mySiteVC.isReaderAppModeEnabled = true
         mySiteVC.willMove(toParent: self)
         addChild(mySiteVC)
         view.addSubview(mySiteVC.view)
         mySiteVC.view.pinEdges()
         mySiteVC.willMove(toParent: self)
 
         navigationItem.rightBarButtonItem = UIBarButtonItem(image: UIImage(systemName: "gearshape"), style: .plain, target: self, action: #selector(buttonSettingsTapped))
-
-        mySiteVC.view.backgroundColor = .systemBackground
     }
 
     @objc private func buttonSettingsTapped() {