Bug-fixes: Update notifications, window positioning

⌖ Window positioning has been improved in this release: The last location of the vault window is now stored so that re-opening it will place it in the same location as last time. There's also a handy Reposition helper in the task-bar menu in case you lose the main window.

🔁 We fixed the update notification glitch that caused the notification to be shown repeatedly. It's now also possible to mute it for the current session (by closing it).