A quick release to get a much-requested feature in.
• Allow storage of downloaded dictionaries on SD card ("external storage") if present and usable.
• Route all download activities through the Dictionary list view.

(Allowing install of the app itself on SD is not recommended because of some of the OS features I'm using, e.g. periodic checks for moves).

Please remember that this is beta software. Please let me know (at eehouse@eehouse.org) what's broken and what features you'd most like to see.

Thanks!
--Eric