Remove go to dashboard test suite for group page and get rid of AR warning

Signed-off-by: Dmitriy Zaporozhets <dmitriy.zaporozhets@gmail.com>

app/views/layouts/nav/_group.html.haml

@@ -16,7 +16,7 @@
           %li
             = link_to edit_group_path(@group) do
               Edit Group
-        - if access = @group.users.find(current_user)
+        - if access = @group.users.find(current_user.id)
           %li
             = link_to leave_group_group_members_path(@group),
               data: { confirm: leave_group_message(@group.name) }, method: :delete, title: 'Leave group' do

features/groups.feature

@@ -7,10 +7,6 @@ Feature: Groups
     When I visit group "NonExistentGroup" page
     Then page status code should be 404
 
-  Scenario: I should have back to group button
-    When I visit group "Owned" page
-    Then I should see back to dashboard button
-
   @javascript
   Scenario: I should see group "Owned" dashboard list
     When I visit group "Owned" page

features/steps/group/milestones.rb

@@ -5,7 +5,9 @@ class Spinach::Features::GroupMilestones < Spinach::FeatureSteps
   include SharedUser
 
   step 'I click on group milestones' do
-    click_link 'Milestones'
+    page.within('.layout-nav') do
+      click_link 'Milestones'
+    end
   end
 
   step 'I should see group milestones index page has no milestones' do
@@ -84,7 +86,7 @@ class Spinach::Features::GroupMilestones < Spinach::FeatureSteps
   end
 
   step 'I click on the "Labels" tab' do
-    page.within('.nav-links') do
+    page.within('.content .nav-links') do
       page.find(:xpath, "//a[@href='#tab-labels']").click
     end
   end

features/steps/groups.rb

@@ -4,10 +4,6 @@ class Spinach::Features::Groups < Spinach::FeatureSteps
   include SharedGroup
   include SharedUser
 
-  step 'I should see back to dashboard button' do
-    expect(page).to have_content 'Go to dashboard'
-  end
-
   step 'I should see group "Owned"' do
     expect(page).to have_content '@owned'
   end