Merge pull request #103 from gnott/tweaks

Fix: was_ever_poa expects True or False. None leaves already published a...
Changes to lens header and footer.
Switch to non-minified js file for testing.
Merge pull request #104 from gnott/lens-2.0

Lens 2.0
Download group authors CSV data for group authors feature.
Merge pull request #105 from gnott/group-authors

Download group authors CSV data for group authors feature.