Dependency graph tester UI

[intranetmouse]

An unsolicited pull request. I noticed there was no user interface portion to the dependencies, per se, so I thought I would whip up one for the tests in dependency-root src/test/java/com.electricmind.dependency.graph.shape as a proof of concept. See DependencyGraphTesterUi.main in that package.

You can click on the tests to the left, and they are displayed in the area on the right. I haven't chased down what is going on, but sometimes the layout changes briefly right as you select one of the tests. Here's what it looks like:

The major changes were:

• Made all of the graphing tests in src/test/java/com.electricmind.dependency.graph.shape extend a new abstract class DependencyGraphTester, factored out common functionality.
• Created the UI class DependencyGraphTesterUi
• Modified Grapher to make draw(Graphics2D, Rectangle2D) and initialize() public