People tend to forget their master password when they always use quick unlock. We should challenge people on every X-th time to enter their master password, so they remember it before it is too late.

Suggested steps (open for discussion ;-) )

• Add a Map<String, int> quickUnlockCounter to AppData which records the uuid of the FileSource for every quick unlock and increments the counter. (And removes it or sets it to 0 every time the file is removed from quick unlock, or master password is entered)
• when the counter reaches > 10 display a banner in the password list to remind users. "Make sure to remember your master password for database name" and buttons like Validate password and Dismiss
• If the user can't remember the password, offer to change it. As long as it is in quick unlock storage we can reencrypt the database with other credentials.