[MPMD-375] Replace *ReportGenerators with a new *ReportRenderers

[michael-o]

This closes #129

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[hboutemy]

LGTM
being forced to define so many exclusions in pom.xml is surprisingly complex

[michael-o]

LGTM being forced to define so many exclusions in pom.xml is surprisingly complex

For now, yes. They will go with Doxia 2.0.0 since Plexus DI is removed there.