implemented hiding/unhiding of mailing lists on the database side

config/logback.xml

@@ -0,0 +1,16 @@
+<configuration scan="true" scanPeriod="30 seconds" debug="true">
+	<!-- scan="true" enables automatic updates if config file changes, see http://logback.qos.ch/manual/configuration.html -->
+	<appender name="STDOUT" class="ch.qos.logback.core.ConsoleAppender">
+		<encoder>
+			<pattern>%d{HH:mm:ss.SSS} [%thread] %-5level %logger{5}: %msg%n
+			</pattern>
+		</encoder>
+	</appender>
+
+	<root level="WARN">
+		<appender-ref ref="STDOUT" />
+	</root>
+	
+	<logger name="de.srsoftware" level="DEBUG" />
+
+</configuration>