Enable new calendar layout

[edsu]

pywb 2.7.0 will include a new calendar layout. Do we like it better than the default calendar layout? We could release using the 2.7.0-beta branch if we want to launch with it prior to the release of 2.7.0.

[lwrubel]

User feedback so far is to prefer a calendar layout. Wait until 2.7 is released and stable before implementing. Will require reviewing styling of the new feature.

[mjgiarlo]

@edsu will tune into pywb weekly meetings to get a clearer picture of the roadmap to 2.7.0, which we believe will automatically be picked up and deployed after it is released or may require a config change.

[edsu]

I'm going to pick this up for a bit during unscheduled week and see how things look with the 2.7.0-beta branch.