Hide new story form

Use jQuery to allow it to be toggled between visible and invisible.
Add scrumelo--base-dir

This should help with serving files and such, so I don't have to stay
in the right buffer to make everything work.
Get data on a story from the server

Uses a GET request to get extra data about a story, if that story
already exists it removes it so users can hide/show as much as they
like.
Fix scrumelo--base-directory

It was storing the file-name when loaded, not the directory of the
file-name.
Add scrumelo-story-json to url dispatcher
Add control command for easy starting/reloading
Fix typos, remove junk