Work in progress on IL datasource
added github data_url to url_paths
Merge branch 'dev' of github.com:openelections/core into dev
Merge branch 'dev' into il
Cleanup of Illinois datasource

The work in progress was in pretty good shape, but I added some
comments, properly set the filename extension and did some basic
handling of special elections.

Addresses https://github.com/openelections/core/issues/117
initial OH datasource work
Additional validation for MD 2010 general election

Addresses https://github.com/openelections/core/issues/36
Merge remote-tracking branch 'openelex/dev' into dev