add aggregated javadoc
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Key: MNG-5118
URL: http://jira.codehaus.org/browse/MNG-5118
Project: Maven 2 & 3
Issue Type: Wish
Components: Documentation: General
Affects Versions: 3.0.3, 3.0.2, 3.0.1, 3.0
Reporter: Herve Boutemy
aggregated javadocs was available in Maven 2.x but was removed in Maven 3
but it is useful when you don't know in which module you can find which class
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