Add writable check to folder where Translation Log is written
completed by: Akshaykumar Kalose
mentors: Ramindu Deshapriya
Difficulty : Medium
Knowledge Required : PHP
Description : index.php writes a translation log file to the /res folder. Write a check to see if this folder/file is writable and exit gracefully if it is not.
Link to wiki section: http://goo.gl/8FN0pe