Bookmark menu clicks should push to history

[richardxia]

Currently, the bookmark menu state doesn't affect the browser history, which means that if you hit the back button on your browser, it navigates the page rather than the bookmark menu subpages. In addition, it doesn't even close the bookmark menu, so it's a bit disorienting that the page underneath the menu will change without the menu itself changing.

[richardxia]

Another related issue to this is that the bookmarks modal will "remember" which subpage it was on, which may be very confusing when you try to reopen the bookmarks modal another way.

For example, suppose you have two bookmark folders: A and B. On the dashboard, if you click A, then it will open up the bookmarks modal to the root, listing both the A and B folders. Then, if you click on A in the modal, it will list the bookmarks with the A folder. If you close the bookmark modal, and then you click on folder B in the dashboard, then it will open up the modal but it will show A's contents, not B's, since it "remembered" the previous page you were at.