Version 2.3:
CrunchyRoll changed their site where some shows have a title image, rather than a text title.
* Changed method for obtaining show title from the page's text title to sanitizing the page URL for a better search-ready alternative.
* Previous removal of the observer element removed the button, so migrated the removal into a timer-handled portion inside the function calling the observer.
+ Added calls inside the DOM observer's parent function to add the button each time the page makes a change refreshes, if the button doesn't already exist, until the observer times out and is removed.
