add option for changing system username

src/main/java/eu/m724/talkpages/Startup.java

@@ -9,15 +9,20 @@ import jakarta.enterprise.event.Observes;
 import jakarta.inject.Inject;
 import jakarta.inject.Singleton;
 import jakarta.transaction.Transactional;
+import org.eclipse.microprofile.config.inject.ConfigProperty;
 
+// TODO remove this or make it only on first run
 @Singleton
 public class Startup {
     @Inject
     LaunchMode launchMode;
 
+    @ConfigProperty(name = "talkpages.systemUser.name")
+    private String username;
+
     @Transactional
     public void examplePage(@Observes StartupEvent ignoredEvent) {
-        Account account = new Account("System");
+        Account account = new Account(username);
         account.persistAndFlush();
 
         addPage(account, "TalkPages", "<p>A website where the users collaboratively create content</p><ul><li><a href=\"https://git.m724.eu/Minecon724/talkpages\">Source code</a></li></ul>");

src/main/resources/application.properties

@@ -1 +1,2 @@
 talkpages.homePage=/
+talkpages.systemUser.name=System