Widget Trial: CyVis

[Fei]

OK, so we finally get rid of the structure101 picture and actually put
a widget on the IW system to see how it goes.

Our initial thought was to used structure101, but the client and
publisher of it, which I think are used for creating the graph for the
analyse, requires a license that's around 1.2k. So we decided to find
something else.

So we found this software called CyVis, which is a cyclomatic
complexity visualiser tool for software built using Java. I used the
MyISERN project last semester for the display right now. And it seems
easy enough to understand so far: red blocks represent high
complexity, green blocks represent low complexity.

The disadvantages of this widget so far is:
1. It needs the .jar files, and .class files for the analyse. So I
assume it's static kind of analyse, it's a little troublesome to get
all those files for a project, but it's still doable.
2. It displays a graph for each package, so far a project that has a
lot of packages, the screen space would not be enough, and that could
be a serious problem.

This is my initial thoughts about it.