fixed errors reported by Checkstyle

git-svn-id: https://svn.apache.org/repos/asf/maven/plugins/trunk@1613731 13f79535-47bb-0310-9956-ffa450edef68
[MCHECKSTYLE-239] removed Translation rule from Maven checks

git-svn-id: https://svn.apache.org/repos/asf/maven/plugins/trunk@1613733 13f79535-47bb-0310-9956-ffa450edef68
[MCHECKSTYLE-240] added 17 and 31 to ignored MagicNumber

git-svn-id: https://svn.apache.org/repos/asf/maven/plugins/trunk@1613735 13f79535-47bb-0310-9956-ffa450edef68
added GenericWhitespace rule

git-svn-id: https://svn.apache.org/repos/asf/maven/plugins/trunk@1613736 13f79535-47bb-0310-9956-ffa450edef68