added PasswordAuthentication in sshd_config

[soko1]

very important parameter for safety. let it be set to "yes" by default, and if desired, it can be set to "no" by adding your key

[volumio]

Thanks for your contributions. We are actively working in this branch: would you mind pushing your PRs there? https://github.com/volumio/Build/tree/volumioOS/scripts

Then: let me clarify that wpasupplicant and the other files that were given 777 are required to be writable by user volumio. Please propose impros which satisfy such requirement. Thnks

[soko1]

okay, no problem!