Add default group for translation

[davidporos92]

refs #133

[barryvdh]

THis doesn't do anything but add the default to the config, not actually use it, right?

[davidporos92]

Yes, only added a default config.

[barryvdh]

But why, if it's not used?

[davidporos92]

As far as I understand the main issue (#133) the translation only worked after they added a group to the config. By adding a default group, the translation will work without setting a group, using the default group.