Deleted files with improper name convention and added files with proper name convention

Deleted several files including test/fixtures/experiments.yml, test/functional/experiment_templates_controller_test.rb, test/functional/experiments_controller_test.rb, test/unit/experiment_test.rb, test/unit/helpers/experiment_templates_helper_test.rb, test/unit/helpers/experiments_helper_test.rb.

Also, added two new files including test/unit/helpers/project_templates_helper_test.rb, test/unit/helpers/projects_helper_test.rb.