Refactored jQuery of the ajax API call to make it more understandable.
Turned off some uneeded express middlewares on web.js and refactored all API call to instangram on index.js using the next_page parameter and separating the fetching from the rendering. Also start making use of some jQuery useful methods.
Corrected the rendering (was duplicated).
Going to test on heroku.
Moved express.boduparser() middleware to before the express.route() one, because it was preventing the POST request to see the request.body.
Configured socket.io. Now, we should just create a new function responsible add the new photos to the map.