* Split power related parts of event checklist into a seperate form
* Revamp H&S overview, remove individual lists.
They were not a good thing.
* Remove old 'vehicle/crew' stuff
* Very initial version of checkin form
* Further work on checkin, add role field etc
* Fix tests after form split
* Add ability to edit checkins, more validation
* Basic checkin/out logic complete
* Add homepage checkin for events happening now
* Minor improvement to homepage UI
* Checkin button turns into checkout button where applicable
* UI work
* Clicking check out does not redirect the user
* Register check in model with the admin site
* Add power record status chip, checklist status chip displays number of checklists
* Minor fixes
* Implement codedoctor suggestions
* pep8
* Add data migration for crew/vehicles
* Checkin only requires login (no perms) and block users from editing other checkins at Django level
Currently performs two functions:
1. Inactivates users that have not logged in for at least one year. Closes#478 (Need to circle back round to full deletion SoonTM)
2. Ensures the supervisor database flag is set correctly for each user
This is run automatically by the Heroku Scheduler addon at midnight daily.
