Allo GUI audiophile web interface

This is the source code and pre-processed application repository for the Allo.com audiophile web interface, available in DietPi OS for system and audio software management, and shipped with the DietPi AlloGUI images for Raspberry Pi and Allo Sparky SBC.

This aims to replace the previous 7-Zip archive distribution from dietpi.com and enable easier development collaboration and transparency.

Compared to the latest previously provided v13.7, this version contains a major rework for performance and security reasons:

• The database is now generated on install, which contains only the login credentials, using the global software password.
• Cache and sessions are now stored via APCu, i.e. in memory instead of on disk.
• Shell commands are not executed via SSH and the dedicated allo user anymore, but directly via exec() as PHP user.
• Various related and unrelated fixes and cleanups have been applied, as well as updates for recent DietPi side changes.
• See CHANGELOG.txt for further details.