Add file system data store

[hallahan]

Although there is a file system media store, a file system data store would also be useful. Github & S3 are great, but a simple file system store would be quite useful if collecting and serving from something like a Raspberry Pi.

Have you considered this option?

[gmaclennan]

Yes, definitely planning on this. See also OpenMapKitServer which is built on Simple-ODK

[hallahan]

Yes, that's what I made after asking this question ^_^.

We could probably put in a file system store like we did on OpenMapKit Server with low effort.

[gmaclennan]

Oh, hi Nick! now I know your Github account :)
Haven't revisited simple-odk for a little while, but last time I was at it I was moving everything to streams in the streams branch. I should be taking a look at where that code is in the next 2-3 weeks.