Changed the code to show the trait class.
[ui] Removed unnecessary code. (Issue #33)
[ui] Changed the code to show the trait icon. (Issue #33)
[ui] Improved the code to run a method of trait in the TestOutlineView. (Issue #33)
[ui] Changed the TreeViewer to set the base test class to the selection element. (Issue #33) (Issue #35)
[ui] Removed unnecessary code. (Issue #33)
[ui] Added the class TestOutlineTreeViewer. (Issue #33)