MPMD-191: Update to PMD 5.2.1 - Update documentation.

* Because PMD is now modularized, there is no overview page for
  Java and Javascript rules anymore.
* Give the hint, that exclusions do not end with `Rule` anymore.

git-svn-id: https://svn.apache.org/repos/asf/maven/plugins/trunk@1637209 13f79535-47bb-0310-9956-ffa450edef68
MPMD-191: Update to PMD 5.2.1 - Update documentation part 2

* Rulenames did not end on Rule in 4.3 as well, so the hints
  were just wrong.

git-svn-id: https://svn.apache.org/repos/asf/maven/plugins/trunk@1637213 13f79535-47bb-0310-9956-ffa450edef68
Update parent to newest maven-plugins pom.


git-svn-id: https://svn.apache.org/repos/asf/maven/plugins/trunk@1637218 13f79535-47bb-0310-9956-ffa450edef68
Fix checkstyle errors showing up due to new maven-checkstyle-plugin version in
current maven-plugins pom.


git-svn-id: https://svn.apache.org/repos/asf/maven/plugins/trunk@1637224 13f79535-47bb-0310-9956-ffa450edef68
[maven-release-plugin] prepare release maven-pmd-plugin-3.3

git-svn-id: https://svn.apache.org/repos/asf/maven/plugins/trunk@1637225 13f79535-47bb-0310-9956-ffa450edef68
[maven-release-plugin] prepare for next development iteration

git-svn-id: https://svn.apache.org/repos/asf/maven/plugins/trunk@1637227 13f79535-47bb-0310-9956-ffa450edef68