You need enable sidebar in Theme Options > Shop > “Enable sidebar on “My Account” page” > On.
Concerning the Wishlist page you need create your menu and add “Custom Menu” widget to Main Sidebar or create your own http://8theme.com/demo/docs/legenda/index.html#!/custom_widget_areas . Then select your sidebar in Wishlist page editor in Page Layout box.
First I enabled WooCommerce Endpoints in the menu: Appearance > Menus > Screen Options > Show > check WooCommerce Endpoints. Cool. Now I drag the logout endpoint into the menu. It works…and disappears when a user is logged out, but how about that avatar and username?
The avatar could be achieved with a font-awesome css class? Just guessing. But that doesn’t show the username. There must be a way to display it the exact same way as My Account page (the legenda theme demo does this).