fix initialization issues with unicorn

amend unicorn script to demonize sidekiq
create a sidekiq demon that unicorn consumes
correct bug in exec_sql with empty params

lib/sql_builder.rb

@@ -61,7 +61,11 @@ class SqlBuilder
     if @klass
       @klass.find_by_sql(ActiveRecord::Base.send(:sanitize_sql_array, [sql, @args]))
     else
-      ActiveRecord::Base.exec_sql(sql,@args)
+      if @args == {}
+        ActiveRecord::Base.exec_sql(sql)
+      else
+        ActiveRecord::Base.exec_sql(sql,@args)
+      end
     end
   end