Add file helper for easy reusing files and folder everywhere in the project.
Fix the datamapper loading.
Refactor the application. Now it should uses the FileHelper.
Fix some bugs in rat and add functionality for adding testcase for tasks.
Make some minor changes to the models helping its integration with the core.
Bug fix in the runner and some other typos.
Add an actual grader for the tasks integrated with the whole system.
Git ingore everything in the tmp folders except for the folders themselve.