Update the SystemD service file to wait for the multi-user target prior
to initiating the application and remove the 'WantedBy' parameter.
This makes sure that the application does not start prior to the
required user being available.
upgpkg: cuberite 1.12b975-1
upgpkg: spigot 1.12.2+b73-1
Add suspending capability for the minecraft server through the control
script and an additional screen session which listens on the same port
with netcat.
* Update .conf accordingly
* IDLE_SERVER can be either true or false
* The default is no idle server
* Choose an available netcat flavor automatically
Variable renaming in .install.
Notify the user of kept directories on post_remove and alter ownership
to root before removing the game user.
Print error messages to stderr.
