convert programs encoded in GBK to UTF-8
translate literals in PHP&JS to Chinese
more translations to Chinese in the view.
Merge branch 'Version-1' of https://github.com/md11235/Sharif-Judge into Version-1

conflits translations.

Conflicts:
	application/views/pages/assignments.twig
	application/views/pages/problems.twig
	application/views/pages/submit.twig