Updating spanish translation

Special thanks on this translation to:
  * Luis David Aguilar Carlos <ludwig9003@gmail.com>
  * Freddy Martín Hernández Facio <fmhf14@gmail.com>
  * Pedro Alonzo Ramírez Tovar <pedro.alonzo709@gmail.com>
Small fixes on spanish translation
Add Gemfile with debian squeeze versions
Require rubygems for daemons scripts
Silence deprecation warnings