Fix a wrongly named migration and namespace an EE-specific policy

Signed-off-by: Rémy Coutable <remy@rymai.me>

app/policies/ee/project_policy.rb

+module EE
+  module ProjectPolicy
+    def disabled_features!
+      raise NotImplementedError unless defined?(super)
+
+      super
+
+      if License.block_changes?
+        cannot! :create_issue
+        cannot! :create_merge_request
+        cannot! :push_code
+        cannot! :push_code_to_protected_branches
+      end
+    end
+  end
+end

app/policies/project_policy.rb

 class ProjectPolicy < BasePolicy
+  prepend EE::ProjectPolicy
+
   def rules
     team_access!(user)
 
@@ -267,19 +269,4 @@ class ProjectPolicy < BasePolicy
       :"admin_#{name}"
     ]
   end
-
-  # EE-specific
-  module EeDisabledFeaturePermissions
-    def disabled_features!
-      super
-
-      if License.block_changes?
-        cannot! :create_issue
-        cannot! :create_merge_request
-        cannot! :push_code
-        cannot! :push_code_to_protected_branches
-      end
-    end
-  end
-  prepend EeDisabledFeaturePermissions
 end

db/migrate/20161021185735_migrate_ee_sidekiq_queues_from_default.rb

 # See http://doc.gitlab.com/ce/development/migration_style_guide.html
 # for more information on how to write migrations for GitLab.
 
-class MigrateEeSidekiqQueuesFromDefault < ActiveRecord::Migration
+class MigrateEESidekiqQueuesFromDefault < ActiveRecord::Migration
   include Gitlab::Database::MigrationHelpers
 
   DOWNTIME = true