refactoring tests and avoid doing it twice.

Well, it is just a proposition. I found that the tests needed some refactoring. I started to do some but I guess we can still improve them. However, it permitted to avoid doing tests contained in KickstartrMavenTest twice. Indeed, since the Robolectric test class was extending from KickstartrMavenTest, the tests were done twice.

I guess if it works once, it should work twice ;) I am waiting for your feedback.