Maven plugin is causing warnings during build

[ppodgorsek]

A Maven plugin is causing warning to be displayed in the console when building the project, this should be fixed.

[WARNING] Some problems were encountered while building the effective model for com.github.springtestdbunit:spring-test-dbunit:jar:1.3.1-SNAPSHOT
[WARNING] 'build.plugins.plugin.(groupId:artifactId)' must be unique but found duplicate declaration of plugin org.apache.maven.plugins:maven-javadoc-plugin @ line 222, column 12
[WARNING] Reporting configuration should be done in section, not in maven-site-plugin as reportPlugins parameter. @ line 167, column 20
[WARNING]
[WARNING] It is highly recommended to fix these problems because they threaten the stability of your build.
[WARNING]
[WARNING] For this reason, future Maven versions might no longer support building such malformed projects.

[ppodgorsek]

Will be done in a maintained repository under ppodgorsek#4