Don't store the password in plain text

[piegamesde]

Please add the option to login without storing the plain password in the configuration files. This could be by:

• Asking for username and password each time (Users that vote rarely or have autotype password managers might use this)
• Specify a "passcommand" – a command that prints the password when called. This may be either through configuration or environment variable. Borg backup uses this concept and it works pretty well, allowing for easy password safe integration.