Added support for browser navigation within the extention
If a user goes to a different folder and then hits the back button they will go
to the last page within the extention that they were in. This is usefull if the
root folder is the default and there are seperate folders similar to "rss feeds"
allowing the user to go to the website and then hit back to be at the same
folder that they were last at, instead of making them navigate to the folder
once again. It does not disrupt the current functionality so there is not toggle