Add in an offline translator

https://github.com/argosopentech/argos-translate  
Is one I found; I'm sure there's others. Install is slow on a pi zero, all translations will take 10gb of space or so 

Feedback from https://www.reddit.com/r/meshtastic/comments/1ka4en5/european_power_outage_huge_shoutout_to_the/