* Changed style so that only default buttons have full background highlight. This prevents confusion as to which button in various dialogs is the default/desired choice.
* Move password generator popup into static function outside of PasswordEdit so other parts of the program can easily access it.
* QDialog forces 'autoDefault' property on all buttons causing them to obtain background highlight when they are focused. Moved Password Generator outside of a QDialog and forced 'autoDefault' to false on Browser Access Dialog.
* Fixed button ordering in Totp Setup Dialog
* About dialog close button is now the default button
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