The server_start function always assumes successful startup, which
is confusing if the server didn't actually start.

More work needs to be done to trap and return the error on startup,
but for now, this at least lets the admin know the server didn't
actually start.

Additionally remove another donate link.

…do and wget dependencies (#1)

* Set dependency installation as non-interactive

Fixes: apt waits for user input when installing dependencies #439

* Add sudo and wget as dependencies

Fixes: Installer assumes system has sudo and wget installed #440

* Add openjdk-17-jre-headless as dependency

The script will install openjdk-17-jre-headless if java isn't installed already. The choice for version 17 was motivated by the fact it is the latest LTS version and also that it is required for running Minecraft 1.18 and above.

Fixes: Make java an MSM installation dependency? #295

* Add software-properties-common as dependency

The Debian script now installs software-properties-common if not installed, so it can use add-apt-repository.

Fixes: Installer assumes software-properties-common is installed on debian system #441

* Fix broken whitespace

Very minor - clean up extraneous whitespace

…ror-on-startup

Add check for successful server startup

…tions

Switch testing to GitHub actions

Fix non-interactive install, and java, software-properties-common, sudo and wget dependencies