Merge branch 'dev'

frontend/static/surveys/items/301/1.jpg

frontend/static/surveys/items/301/2.jpg

frontend/static/surveys/items/301/3.jpg

frontend/static/surveys/items/301/4.jpg

frontend/static/surveys/items/301/q.mp3

frontend/static/surveys/items/302/1.jpg

frontend/static/surveys/items/302/2.jpg

frontend/static/surveys/items/302/3.jpg

frontend/static/surveys/items/302/4.jpg

frontend/static/surveys/items/302/q.mp3

frontend/static/surveys/items/303/1.jpg

frontend/static/surveys/items/303/2.jpg

frontend/static/surveys/items/303/3.jpg

frontend/static/surveys/items/303/4.jpg

frontend/static/surveys/items/303/q.mp3

frontend/static/surveys/items/304/1.jpg

frontend/static/surveys/items/304/2.jpg

frontend/static/surveys/items/304/3.jpg

frontend/static/surveys/items/304/4.jpg

frontend/static/surveys/items/304/q.mp3