Fixed include in MANIFEST that caused previous brown bag release.
Merge pull request #3 from 4teamwork/lk_fix_include_in_manifest

Fixed include in MANIFEST that caused previous brown bag release.
Preparing release 1.0.2
Back to development: 1.0.3
Merge pull request #4 from 4teamwork/pg_fix_backref_name

Fixed backref name of the groups_user join table.
Implements OGDSService class which provides methods to query users from the ogds database.

At a later date the service should also provided mehtods to query clients, organisational and administrative units.