Removed user data field from MyVertex, it's better to explicitly store and name all of the information previously held in this map
Added call to reset internal simulator data when Heal all is clicked. Closes #8.
Firther reduced occurences of user data stored in random string-object maps instead of in explicitly declared fields.
Closes #14.
Fixed bug where charts in toolbox on the right would change size on graph events. Closes #9. Closes #13.
Refactored Display so that when the graph is changed (e.g. load/generate) a repaint is forced on the VV instead of removing and re-adding all components. This means the panel on the right does not keep growing. Closes #9
Fixed problem with range of infected chart (max was 0 and it looked like the line was not there).
Merge pull request #17 from mbatchkarov/Plovdiv-9

Plovdiv 9