Implementing this "toggle" behaviour between bookmarked or not looked easy enough to do, so I created a branch with it:
https://code.launchpad.net/~madmaxpt/ar ... marktoggle
Since it's my first branch tell me if I've destroyed the universe.
Related to this, other improvements could be to:
- say something to the user when bookmarks are full;
- have some other method of removing bookmarks in the Edit Bookmarks screen (always thought having to delete the whole server name isn't very obvious...).