apps.examiner.views: Utf-8 encoding for filenames in zip.
apps.examiner.views: Utf-8 encoding for filenames in zip.

Closes #188.

vegarang/devilry-django,devilry/devilry-django,devilry/devilry-django,devilry/devilry-django,devilry/devilry-django,vegarang/devilry-django