renamed SearchLevel::getSelected() to isLevelSelected() and elaborated on comment
renamed variable/argument for isLevelSelected() to more clearly indicate that we are passing in a level object, and not the string name of the level
removed dead code from isLevelSelected() method
renamed & moved search class' tests to be organized under a single folder for easier running.
removed Magento/ecommerce specific methods from search class. May have to create an ecommerce module like @KyleCannon suggested to me
renamed Search class to SearchForm. Renamed folder containing it's unit tests as well.
removed SearchForm's TestCase. It turns out that none of the utility methods on that class are used by the SearchForm's unit tests. I think the Magento tests used them.