Create a new Motion Chart plugin to see how metrics evolve over time

This plugin will require an internet access to google server as we plan to use the Google Visualization API from GWT and more precisely the Motion Chart componenent.

Here a POC done in google docs : http://spreadsheets.google.com/pub?key=pQKeH2qwTbf_dmHfgiZjMHw

To be noted :

• the biggest interest of the motion chart I could see is to use it as a super time machine, to have the breakdown by module or by package. In this case, you can see the evolution through time of the various indicators for each module
• it would take an other dimension by adding some more metric, such as number of bugs or number of people working on the project.... in that case, it would be possible to use it to determine correlations between metrics
• An other possible view would be to break down by developer