[urgent fix] Fixed fatal crash (.BeanPlant)

Fixed a fatal crash in the old settings importer if the .BeanPlant
folder wasn't present. Fixed this by checking if it exists, and creating
it if it doesn't
[fix] Fixed LoginFrame not being reset

Fixed the LoginFrame not being reset if the password was incorrect
[new] Password is hidden on clicking 'Accept'

The password is now hidden if the user clicks 'Accept' on the LoginFrame
for security... In the event that the login fails and the frame is
reset, the password's visibility will be set to what it was before the
user clicked 'Accept'