Gnome commander creds

Gnome-commander stores clear text passwords in ~/.gnome-commander/connections file.
![gnome-commander](https://cloud.githubusercontent.com/assets/8155715/3677993/7a08c6f0-1296-11e4-80a9-052300eaae53.png)

Looks like a bad copypasta, since ```dbvis_file``` doesn't exist in this module.