use standard logback.xml (#1666)

* upgrade to spring boot 1.5.2

* add full update to REST API

* modify ratings controller

* upgrade herold

* fix integration test

* fix integration test

* minor fix

* fix integration test

* fix integration test

* minor cleanup

* minor cleanup

* remove log4j properties

* use standard logbook.xml

spring-data-cassandra/src/main/resources/logback.xml

@@ -1,5 +1,5 @@
+<?xml version="1.0" encoding="UTF-8"?>
 <configuration>
-
     <appender name="STDOUT" class="ch.qos.logback.core.ConsoleAppender">
         <encoder>
             <pattern>web - %date [%thread] %-5level %logger{36} - %message%n
@@ -16,5 +16,4 @@
     <root level="INFO">
         <appender-ref ref="STDOUT" />
     </root>
-
 </configuration>