Fix username not shown when using auth backend

See: https://stackoverflow.com/a/55206743/1393103

Author: LEDfan

pom.xml

@@ -252,8 +252,7 @@
 		<!-- UI frameworks -->
 		<dependency>
 			<groupId>org.thymeleaf.extras</groupId>
-			<artifactId>thymeleaf-extras-springsecurity4</artifactId>
-			<version>3.0.2.RELEASE</version>
+			<artifactId>thymeleaf-extras-springsecurity5</artifactId>
 		</dependency>
 		<dependency>
 			<groupId>org.webjars</groupId>