null-check for $url before checking for key

Comes up for Known which gives funky syndication-target IDs like twitter::kylewmahan.

paths are allowed in Quill URLs now

fixes #18

Don't use php shorttags

Simple .htaccess file to get it working on Apache

closes #4

Adds possibility to post photos.

Adds possibility to use SQLite as db

Adds authorizing false so it would not show the Savant3:: error

Twitter changed some XSS security settings which prevents Quill from injecting JS onto the page for the inline "favorite" button. This change makes it open the "favorite" screen in a new window.

With this it is possible to post a photo note with a description, nothing
more. It doesn't move the file in the file system, just posts it from
the temp location to the users server. It also does validate for file size,
content type and max upload size and shows the errors to the user.

If everything goes according to plan the response from the users server
is shown, together with a link with the posted photos URL.

made a nice looking dropdown menu for the publish button