Various QR fixes.
Tiny styling adjustments.
You can now create threads when outside of the index.
Allow selection-to-quote to work on any text inside the quoted post, not just the comment. Close#789.
Add an option to toggle Thread/Reply Hiding Buttons.
Save hiding settings of individual threads, like if we want to see its stub or not when we reload the
page.
Add the menu buttons in stubs.
Make the open function for menu entries optional.
