[api] give the deleted repo another shot

src/api/db/migrate/20131022114302_check_deleted_repo.rb

@@ -1,10 +1,11 @@
 class CheckDeletedRepo < ActiveRecord::Migration
 
   class Repository < ActiveRecord::Base; end
+  class Project < ActiveRecord::Base; end
 
   def self.up
     # default repository to link when original one got removed
-    d = Project.find_or_create_by_name("deleted")
+    d = Project.where(name: 'deleted').first_or_create
     Repository.where(project_id: d.id, name: 'deleted').first_or_create
   end