Add admin page for web apps

app/views/shared/_admin_nav.html.erb

@@ -10,5 +10,9 @@
   <%= link_to "Lightning", admin_lightning_path,
         class: main_nav_class(@current_section, :lightning) %>
 <% end %>
+<% if Setting.remotestorage_enabled? %>
+  <%= link_to "Apps", admin_app_catalog_web_apps_path,
+        class: main_nav_class(@current_section, :app_catalog) %>
+<% end %>
 <%= link_to "Settings", admin_settings_registrations_path,
       class: main_nav_class(@current_section, :settings) %>

app/views/shared/_admin_sidenav_app_catalog.html.erb

@@ -0,0 +1,10 @@
+<%= render SidenavLinkComponent.new(
+  name: "Web Apps", path: admin_app_catalog_web_apps_path, icon: "globe",
+  active: current_page?(admin_app_catalog_web_apps_path)
+) %>
+<%= render SidenavLinkComponent.new(
+  name: "Recommended Apps", path: "#", icon: "star", disabled: true
+) %>
+<%= render SidenavLinkComponent.new(
+  name: "OAuth Apps", path: "#", icon: "key", disabled: true
+) %>