Register of AdditionalPropertySourceConfigurer previously present in web.xml.

libresonic-main/src/main/java/org/libresonic/player/boot/Application.java

@@ -1,6 +1,7 @@
 package org.libresonic.player.boot;
 
 import org.directwebremoting.servlet.DwrServlet;
+import org.libresonic.player.spring.AdditionalPropertySourceConfigurer;
 import org.springframework.boot.SpringApplication;
 import org.springframework.boot.autoconfigure.SpringBootApplication;
 import org.springframework.boot.builder.SpringApplicationBuilder;
@@ -40,7 +41,9 @@ public class Application extends SpringBootServletInitializer {
     }
 
     public static void main(String[] args) {
-        SpringApplication.run(Application.class, args);
+        SpringApplication springApplication = new SpringApplication(Application.class);
+        springApplication.addInitializers(new AdditionalPropertySourceConfigurer());
+        springApplication.run(args);
     }
 
 }