Delete Pool::isUsed, moved to Rigs::isPoolActive
Add refresh just one pool data
Comment
Suppression APC, sinon on récupère les dates de dernière vérification (internet, load average, mémoire etc) invalides
- Fix a bug on real graphic cards check
- Check rig internal state every 59 sec instead of each call
  - Add web/app_dev.php in ignore files
- Start of editing pool