Fix files not uploading

File over 5MB not uploading. File with answer option feedback when there are no answer option gives null pointer exception.

assigned to @klamas

created branch feature/52 to address this issue

mentioned in merge request !55 (merged)

mentioned in commit dd6e41f5

mentioned in commit de5a8dea

mentioned in commit 6b885140

mentioned in commit 31be799e

closed with merge request !55 (merged)