2.4.0 BETA 4

Features

• pre-install all requirements in the docker image (7c69c66)
• Reorganize repository to contain only the server code (36a706f)
• Use dedicated directory for cache files (5ab2d36)

Bug Fixes

• Can't delete item in queue when queue is not active (07df754)
• Check if metadata job exists before clearing it (0b78ba0)
• leftover issues after repo split up (cec5e7f)
• use relative path for all default images and collages (fdc942f)