DATAMONGO-1689 - Polishing.

Remove Kotlin specifics from pom.xml as those are managed in spring-data-build.
Additionally format code, update license header, update JavaDoc and add issue reference to tests.

Author: christophstrobl

spring-data-mongodb/pom.xml

@@ -18,7 +18,6 @@
 	<properties>
 		<objenesis>1.3</objenesis>
 		<equalsverifier>1.5</equalsverifier>
-		<kotlin>1.1.2-3</kotlin>
 	</properties>
 
 	<dependencies>
@@ -261,64 +260,6 @@
 	<build>
 		<plugins>
 
-			<plugin>
-				<artifactId>kotlin-maven-plugin</artifactId>
-				<groupId>org.jetbrains.kotlin</groupId>
-				<version>${kotlin}</version>
-				<configuration>
-					<jvmTarget>1.8</jvmTarget>
-				</configuration>
-				<executions>
-					<execution>
-						<id>compile</id>
-						<phase>compile</phase>
-						<goals> <goal>compile</goal> </goals>
-						<configuration>
-							<sourceDirs>
-								<sourceDir>${project.basedir}/src/main/kotlin</sourceDir>
-								<sourceDir>${project.basedir}/src/main/java</sourceDir>
-							</sourceDirs>
-						</configuration>
-					</execution>
-					<execution>
-						<id>test-compile</id>
-						<phase>test-compile</phase>
-						<goals> <goal>test-compile</goal> </goals>
-						<configuration>
-							<sourceDirs>
-								<sourceDir>${project.basedir}/src/test/kotlin</sourceDir>
-								<sourceDir>${project.basedir}/src/test/java</sourceDir>
-							</sourceDirs>
-						</configuration>
-					</execution>
-				</executions>
-			</plugin>
-
-			<plugin>
-				<groupId>org.apache.maven.plugins</groupId>
-				<artifactId>maven-compiler-plugin</artifactId>
-				<executions>
-					<execution>
-						<id>default-compile</id>
-						<phase>none</phase>
-					</execution>
-					<execution>
-						<id>default-testCompile</id>
-						<phase>none</phase>
-					</execution>
-					<execution>
-						<id>java-compile</id>
-						<phase>compile</phase>
-						<goals> <goal>compile</goal> </goals>
-					</execution>
-					<execution>
-						<id>java-test-compile</id>
-						<phase>test-compile</phase>
-						<goals> <goal>testCompile</goal> </goals>
-					</execution>
-				</executions>
-			</plugin>
-
 			<plugin>
 				<groupId>com.mysema.maven</groupId>
 				<artifactId>apt-maven-plugin</artifactId>