Merge branch 'active-users-check' into 'master'

Active users check

For gitlab/gitlab-ee#248

See merge request !1673

CHANGELOG

@@ -47,6 +47,7 @@ v 7.9.0 (unreleased)
   - Fix highliht of selected lines in file
   - Reject access to group/project avatar if the user doesn't have access.
   - Add database migration to clean group duplicates with same path and name (Make sure you have a backup before update)
+  - Add GitLab active users count to rake gitlab:check
 
 v 7.8.2
   - Fix service migration issue when upgrading from versions prior to 7.3

lib/tasks/gitlab/check.rake

@@ -29,6 +29,7 @@ namespace :gitlab do
       check_redis_version
       check_ruby_version
       check_git_version
+      check_active_users
 
       finished_checking "GitLab"
     end
@@ -781,6 +782,10 @@ namespace :gitlab do
     end
   end
 
+  def check_active_users
+    puts "Active users: #{User.active.count}"
+  end
+
   def omnibus_gitlab?
     Dir.pwd == '/opt/gitlab/embedded/service/gitlab-rails'
   end