ApplicationBootstrap: enable headless mode.

No functional changes.

Author: php-coder

src/main/java/ru/mystamps/web/support/spring/boot/ApplicationBootstrap.java

@@ -43,6 +43,8 @@
 public class ApplicationBootstrap {
 
 	public static void main(String... args) {
+		System.setProperty("java.awt.headless", "true");
+		
 		// @see http://www.slf4j.org/codes.html#loggerNameMismatch
 		System.setProperty("slf4j.detectLoggerNameMismatch", "true");