One bit commit - added question model with basic fields, controller - nearly nothing there and some specs.
Some more tests, 2 of them are stupid, but I need to sleep.
Developing questions - now 4 tests pass.
Parsing now works.
Added length validation, added index to category column and changed migration create_questions -> I am not able to write proper migration to change data type of question_text.
Now we can choose random question from given category.
Check_answer added to question model.
Now check_answer returns false, when the answer is not correct.
image_url added to question, updated parsing.
Merge branch 'modeling-question' into development