remove log4j dependencies (#1675)

* 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

* remove log4j dependencies

spring-dispatcher-servlet/pom.xml

@@ -36,16 +36,7 @@
             <artifactId>slf4j-api</artifactId>
             <version>${org.slf4j.version}</version>
         </dependency>
-        <dependency>
-            <groupId>org.apache.logging.log4j</groupId>
-            <artifactId>log4j-core</artifactId>
-            <version>${log4j.version}</version>
-        </dependency>
-        <dependency>
-            <groupId>org.apache.logging.log4j</groupId>
-            <artifactId>log4j-slf4j-impl</artifactId>
-            <version>${log4j.version}</version>
-        </dependency>
+
     </dependencies>
 
     <build>
@@ -87,7 +78,6 @@
         
         <!-- logging -->
         <org.slf4j.version>1.7.21</org.slf4j.version>
-        <log4j.version>2.7</log4j.version>
         
         <!-- various -->
         <javax.servlet.version>3.1.0</javax.servlet.version>

spring-dispatcher-servlet/src/main/resources/log4j2.xml

@@ -1,14 +0,0 @@
-<?xml version="1.0" encoding="UTF-8"?>
-<Configuration status="WARN">
-    <Appenders>
-        <Console name="Console" target="SYSTEM_OUT">
-            <PatternLayout pattern="%d{yyyy-MM-dd HH:mm:ss.SSS} [%t] %-5level %logger{36}:%n[+] %msg%n"/>
-        </Console>
-    </Appenders>
-
-    <Loggers>
-        <Root level="info">
-            <AppenderRef ref="Console"/>
-        </Root>
-    </Loggers>
-</Configuration>