Edit Answers

add: pending specs
add: red spec - Unable to find link
add: link_to edit
add: answer#get pending specs
fix: get query with question_id
fix: edit_question_answer_path
add: answer#edit view
add: specs for answer#edit
add: red spec - The action 'update' could not be found
add: red spec - The action 'update' could not be found
add: answer#patch
add: red spec for invalid attributes
add: render :edit if wrong atts
add: green spec for scenario Answer's creator edits answer
add: red spec - no user
add: answer - user reference
add: red spec for - has no edit link
add: check if answer belongs to user in view
add: red spec for creator can see 'edit' link
add: set user for answer after create
add: flash[:error] message