* Up-to-date requirements.txt

* Update settings

* New style middleware

* Start moving code to `alexia` python module

* Remove feedback button

* Moved all Python logic to alexia module

* Class Based Views

* CBVs

* AppConfigs, flake8 & isort

* Move templates into apps

* Revert "Move templates into apps"

This reverts commit e4c86562e4831bdb42cb5f7375bf9aced34feac8.

* Organize more templates

* Asset management: remove qtip

* More asset cleanup

* i18n in JS

* Favicon and calendar view fix

* Better favicon

* Date/timepicker cleanup

* Split Python code and other files

* More CBVs

* isort

* Some more root cleanup. Only templates and python to-do

* Remove references to StandardReservation

* Remove MailTemplate.send_at

* Scheduling cleanup

* Profile & Organization CBVs

* Few tweaks

* Fix test imports

* Oink

* Template revamp: round 1

* Can create events in calendar view

* Fix initial datetime bug

* Various fixes

* Some docs update

* Oink

* Few cleanups

* Finalize `billing`

* Finalize `general`, `organization` and `profile`

* Effcient mass mails

* Eliminate IBANS

* Fix API tests

* Cleanup + PEP8