Cloud sync

```
Not an bug but a issue I have. Sorry I did not see a place for suggestions.

This app needs a cloud sync system of some sort. o sync thw white list. I'm 
tired of having to allow all my sites again on all my windows devices. 

a service like dropbox or google drive account would be fine.

thanks


```

Original issue reported on code.google.com by `jfain...@gmail.com` on 22 Jan 2015 at 12:25
