A planning calendar for wagtail

THIS IS STILL A WORK IN PROGRESS

• [X] Display published pages
• [X] Display planned pages
• [X] Use hook to get the events
• [X] Add popup on click/hover
• [X] Move planned pages to change the planning
• [X] Move unplanned pages from the side of the calendar to plan them
• [X] Move planned pages to the side of the calendar to unplan them
• [X] Check permissions in wagtail_calendar_register_events hooks
• [ ] Add unit tests
• [ ] Docs
• [ ] Release!

Keep in mind those comes from a development version.

The unplanned pages are accessible on the left.

You can drag and drop them to plan them.