Session: Don't print connection string

[duncandewhurst]

Session prints the connection string including the password.

Edit: This is bad for sharing notebooks or committing them to Github.

[kindly]

Changed this so that it still prints connection string but puts *** in place of password.

Could add an option to not print the connection string entirely?

[duncandewhurst]

Thanks! Not printing the string entirely would be a good option, for those concerned about sharing URLs and usernames etc.