Image feature story26

Image Feature after making required changes with it's storage on server.
Don't think we really need to have it like this. The :image_id is unique even w/o the user and measurement, so the path can be simply '/images/:imageId'. The response should not be JSON, but simply the image itself - get the BLOB from the DB and stream it directly to the client. Set the content-type header according to image type. DocId doesn't matter - client should have the measurement record already anyway.