Removed IO folder, no longer used
Added GUI elements to for attaching images to addQuestion form
added image attributes for both question and answer to QuestionCard class
added everything except the viewing of questions
changed ViewQuestion visuals to accommodate images, back-end still needs doing
minor design changes to image viewer
added images to ViewQuestion, minor bugfixing
finished showing of images in viewQuestion
slight change in structure of QuestionCollection, allowing for better searching
fixed nonsensical dialog when saving subjects (propmting to lose unsaved changed when saving changes)
Merge branch 'AttachImageToQuestionCard'
added try/catch block to main method