Renaming index file related to tips,model_answers,test_cases controllers
Renaming index file related to hints controller
Issue #506 editing create method in problems controller
Issue #506 editing edit method in problems controller
Issue #506 editing new method in problems controller
Issue #506 editing destroy method in problems controller
Issue #506 editing update method in problems controller
Issue #506 adding private params method in problems controller
Issue #506 putting wizard tabs in new.html problems controller
Issue #506 editing _decription.html problems controller
Issue #506 editing edit view in problems controller
Issue #506 editing title view in problems controller
Issue #506 editing track view in problems controller
editing index,new, create methods in test_cases controller
Issue #506 editing index,new, create methods in test_cases controller
Issue #506 editing update  method in test_cases controller
Issue #506 adding new private params method in test_cases controller
Issue #506 adding update.js file in test_cases controller
Issue #506 editing and adding tabs in new.html in test_cases controller
Issue #506 editing and adding tabs in index.html in test_cases controller