Rename Services to Project services

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

app/views/projects/services/index.html.haml

-%h3.page-title Services
-%p.light Services allow you to integrate GitLab with other applications
+%h3.page-title Project services
+%p.light Project services allow you to integrate GitLab with other applications
 %hr
 
 %ul.bordered-list

features/steps/project/project_services.rb

@@ -8,7 +8,7 @@ class ProjectServices < Spinach::FeatureSteps
   end
 
   step 'I should see list of available services' do
-    page.should have_content 'Services'
+    page.should have_content 'Project services'
     page.should have_content 'Campfire'
     page.should have_content 'Hipchat'
     page.should have_content 'GitLab CI'