Add about page with feedback functionality

spec/acceptance/users/feedback.feature

@@ -0,0 +1,12 @@
+Feature: A user can submit feedback
+
+  @javascript
+  Scenario: A user submits feedback
+    Given I am signed in as a user
+    And the user is on the homepage
+    When the user opens the side menu
+    And the user clicks on the about link in the side menu
+    And the user fills in the feedback field
+    And the user clicks on the submit feedback button
+    Then the user should see the feedback submitted message
+    And a user feedback should be created containing the feedback

spec/acceptance_steps/users/feedback_steps.rb

@@ -0,0 +1,15 @@
+step "the user fills in the feedback field" do
+  find('.feedback-field').set "Nice app!"
+end
+
+step "the user clicks on the submit feedback button" do
+  find(".submit-feedback-button").click
+end
+
+step "the user should see the feedback submitted message" do
+  page.should have_content I18n.t('user.about.feedback.received')
+end
+
+step "a user feedback should be created containing the feedback" do
+  expect( UserFeedback.find_all_by_user_id_and_content(@user.id, 'Nice app!').size ).to eq 1
+end

spec/acceptance_steps/users/side_menu_steps.rb

@@ -2,6 +2,7 @@ step "the user opens the side menu" do
   page.execute_script %|$('.toggle-side-menu').click()|
   sleep 1
 end
+
 step "the user opens the side menu again" do
   step "the user opens the side menu"
 end
@@ -10,6 +11,10 @@ step "the user clicks on the lists link in the side menu" do
   page.execute_script %|$('.side-menu-lists').click()|
 end
 
+step "the user clicks on the about link in the side menu" do
+  page.execute_script %|$('.side-menu-about').click()|
+end
+
 step "the user clicks on the active list link in the side menu" do
   page.execute_script %|$('.side-menu-active-list').click()|
 end