Gianni: example of Venn Diagram in Play

Simple (static) integration of the Venn Diagram in Play.
(Done with Gianni)
Merge branch 'master' of https://github.com/TweetAggregator/TweetAggregator
Merge branch 'master' of https://github.com/TweetAggregator/TweetAggregator
(With Gianni) Venn Diagram works

Simple (Hard coded) example of Venn Diagram. Will need to be adapted
later for the display with the map.