feat/add logout button views (#254)

* test: add shared context for unauthenticated access

* feat:add logout button only in view admins

* add logout button to sidebar

Author: lucasleandro1

app/assets/stylesheets/custom.css

@@ -0,0 +1,5 @@
+.navigation {
+  display: flex;
+  flex-direction: column;
+  justify-content: space-between;
+}

app/views/admin/application/_navigation.html.erb

@@ -0,0 +1,28 @@
+<%#
+# Navigation
+
+This partial is used to display the navigation in Administrate.
+By default, the navigation contains navigation links
+for all resources in the admin dashboard,
+as defined by the routes in the `admin/` namespace
+%>
+
+<nav class="navigation">
+  <div>
+    <%= link_to(t("administrate.navigation.back_to_app"), root_url, class: "button button--alt button--nav") if defined?(root_url) %>
+
+    <% Administrate::Namespace.new(namespace).resources_with_index_route.each do |resource| %>
+      <%= link_to(
+        display_resource_name(resource),
+        resource_index_route(resource),
+        class: "navigation__link navigation__link--#{nav_link_state(resource)}"
+      ) if accessible_action?(model_from_resource(resource), :index) %>
+    <% end %>
+  </div>
+
+  <div >
+    <%= link_to "Logout", destroy_user_session_path, method: :delete, class: "button button--danger w-full" %>
+  </div>
+</nav>
+
+

config/initializers/administrate.rb

@@ -0,0 +1 @@
+Administrate::Engine.add_stylesheet("custom.css")

config/initializers/assets.rb

@@ -12,3 +12,5 @@
 # application.js, application.css, and all non-JS/CSS in the app/assets
 # folder are already added.
 # Rails.application.config.assets.precompile += %w( admin.js admin.css )
+
+Rails.application.config.assets.precompile += %w[custom.css]