Fixed bug in starting tasks on the internal computing resource on port 22. Removed old internal computing resource volumes.

Moved from Text to Page models, in order to allow building a mini-website inside the platform to provide help and informations.

Removed dedicated models for computing and user conf, and merged it in the models themselves. Added support for the groups. Minor fixes and improvements.

Added the power user status and restricted options for standard users when adding containers and running taks. Fixed bug in proxy auth.