Redirecting to Maps index after Annotation created

[keithnewman14]

Currently, for the experiment branch, I am redirecting the user to the Maps index view with the follow code:

$("#modal-annotation").on('submit', function(){
    window.location = '../maps'
  });

It's probably better to handle this in the Annotations Controller, but I was running into a bunch of problems because the action of saving the annotation occurs in the modal, so a standard redirect_to doesn't seem to work. This also seems to cause a minor bug with the :disable_with attribute for the submit button where it doesn't change to the disabled view until you press it a second time (though it works the first time and only submits the data once).

Could be something worth fixing up for the experiment branch, though it is only necessary for the experiment, so it also might not be worth spending too much time on.