Portals; Changing password displays browser popup confirmation instead of a custom widget Modal form

When changing a password in a Portal, the message "Your password has been successfully updated." was displayed in a browser popup (window.alert) which looked especially bad in mobile.

This now uses the widget.UI.MsgBoxInfo function which has been updated to use a custom widget Modal form (as per widget.UI.MsgBoxAlert).

NOTE: When running (or testing) the Portal internally within fijnPOWER Connect, this behaviour is slightly different and you will be prompted to close the Portal and sign in again.