Edited Method to determin date, month, year
added new variables - Date, Month, Year
Edited parseTaskStartYear and parseTaskStartMonth condition
Added parseTaskEndYear and parseTaskEndMonth and parseTaskEndDate
Added code for _taskEndDate, _taskEndMonth, _taskEndYear
Edited test case
Edited Method for parseTaskEndDate, parseTaskEndYear, parseTaskEndMonth
Added test case to test month date year