Improve UX when following note links / backlinks

[cloverich]

#223 implemented the simplest note linking behavior wrt url / back history. In Apple notes, it drives me notes when I navigate to another note, and then can't navigate back. I did not have time mental space to come up with a truly robust design so instead opted for the simplest approach that would fit my typical use case: The back button would take you back to the prior note. This works except, if you follow 3, 4, or 5 notes, suddenly you have to hit back 5 times just to get back tot he notes list. Instead we could probably do one of the following, or something else:

• Add a separate back button to go back to original note / notes list / prior note
• Make back a dropdown when in this mode, and so you can go back to prior note OR back to notes list
• Use backlinks, so main back button goes to list, but you can use backlinks to get to the prior note (most robust, mediocre UX)

Probably also worth just leaving the current behavior to bake a while, and see if I or any future user actually gets annoyed by it or not. Because less features are always easier to maintain.