Adding automatic upgrade of build system.
Upgrade system in non-interactive mode.
Removed Tails-specific code.
Restructured code.
Adding new package digabi-os-debug for debug feature installation.
Adding initial .gitignore.
Install authorized_keys for root user.
Adding digabi-os-debug to required packages.
Adding command digabi debug.
Disable startup of openssh-server at runlevel 2.
Adding sudo permissions.
Bugfixes.
Updated changelog.
Added documentation for repository maintenance.
Updated submodule.
Removed unused helper script.
Removed old changelog creation script.
Removed obsolete README.
Added Jenkins build script.
Added build script from digabi-server-live.