General How do I build and install all these plugins from source?

maven -Dgoal=clean,plugin:install multiproject:goal

 How do I test all these plugins?

maven -Dgoal=plugin:test multiproject:goal After they have been installed

How do I build the web site for the optional plugins?

maven multiproject

 How do I deploy the web site for the optional plugins?

maven multiproject site:sshdeploy

 How do I generate the dashboard for all plugins?

maven dashboard