Platform feature done

1) First, user is show with a list of problem WHERE
	problem_id: user_id and shareable: true OR
2) Next, user is able to choose from a list of code WHERE
	problem_id: problem_id AND username: username OR
	problem_id: shareable:true AND shareable: true
3) Last, user is able to choose from a list of dataset WHERE
	code_id: code_id AND username: username OR
	code_id: code_id AND shareable: true
4)Lastly, user is able to input args and click the 'run' button

Added a status tab to display various message
-passed test case
-fail test case + diff output
-fail to execute