Merge branch 'rs-help-page' into 'master'

Help page improvements

- Only signed-in users can see version information
- Add "Community Edition" text so the header is
  less barren when version information is hidden
- Minor copy edits
- Make all "Quick help" link text the entire body
  of the link. Prior, it wasn't obvious which part
  of each item was an actual link.

Closes #2721 

See merge request !1415

app/helpers/version_check_helper.rb

 module VersionCheckHelper
   def version_status_badge
-    if Rails.env.production?
+    if Rails.env.production? && current_application_settings.version_check_enabled
       image_tag VersionCheck.new.url
     end
   end

app/views/help/index.html.haml

 %div
   %h1
     GitLab
-    %span= Gitlab::VERSION
-    %small= Gitlab::REVISION
-    - if current_application_settings.version_check_enabled
+    Community Edition
+    - if user_signed_in?
+      %span= Gitlab::VERSION
+      %small= Gitlab::REVISION
       = version_status_badge
   %p.slead
     GitLab is open source software to collaborate on code.
     %br
-    Manage git repositories with fine grained access controls that keep your code secure.
+    Manage git repositories with fine-grained access controls that keep your code secure.
     %br
     Perform code reviews and enhance collaboration with merge requests.
     %br
@@ -33,19 +34,8 @@
       .panel-heading
         Quick help
       %ul.well-list
-        %li
-          See our website for
-          = link_to 'getting help', promo_url + '/getting-help/'
-        %li
-          Use the
-          = link_to 'search bar', '#', onclick: 'Shortcuts.focusSearch(event)'
-          on the top of this page
-        %li
-          Use
-          = link_to 'shortcuts', '#', onclick: 'Shortcuts.showHelp(event)'
-        %li
-          Get a support
-          = link_to 'subscription', 'https://about.gitlab.com/pricing/'
-        %li
-          = link_to 'Compare', 'https://about.gitlab.com/features/#compare'
-          GitLab editions
+        %li= link_to 'See our website for getting help', promo_url + '/getting-help/'
+        %li= link_to 'Use the search bar on the top of this page', '#', onclick: 'Shortcuts.focusSearch(event)'
+        %li= link_to 'Use shortcuts', '#', onclick: 'Shortcuts.showHelp(event)'
+        %li= link_to 'Get a support subscription', 'https://about.gitlab.com/pricing/'
+        %li= link_to 'Compare GitLab editions', 'https://about.gitlab.com/features/#compare'

spec/views/help/index.html.haml_spec.rb

+require 'rails_helper'
+
+describe 'help/index' do
+  describe 'version information' do
+    it 'is hidden from guests' do
+      stub_user(nil)
+      stub_version('8.0.2', 'abcdefg')
+      stub_helpers
+
+      render
+
+      expect(rendered).not_to match '8.0.2'
+      expect(rendered).not_to match 'abcdefg'
+    end
+
+    it 'is shown to users' do
+      stub_user
+      stub_version('8.0.2', 'abcdefg')
+      stub_helpers
+
+      render
+
+      expect(rendered).to match '8.0.2'
+      expect(rendered).to match 'abcdefg'
+    end
+  end
+
+  def stub_user(user = double)
+    allow(view).to receive(:user_signed_in?).and_return(user)
+  end
+
+  def stub_version(version, revision)
+    stub_const('Gitlab::VERSION', version)
+    stub_const('Gitlab::REVISION', revision)
+  end
+
+  def stub_helpers
+    allow(view).to receive(:markdown).and_return('')
+    allow(view).to receive(:version_status_badge).and_return('')
+  end
+end