This implements #183

Make sure the more useful local times are displayed both in the form and on the list page

Add a new link to edit form leading to owner creation form and passing the primary key of the edited AK/wish to that view
To realize that link, the corresponding field is excluded from the default form rendering and the rendering is triggered manually for that field (and the name field that should still appear on top)
When user is successfully created, they is set as owner of an AK, the user is redirect to the detail page of that AK and a message is displayed
Add corresponding test
This implements #96 and #86

Add start and end inputs below the calendar widget that can be used to add new entries to the calendar.
Inputs are based on html5 widgets, will fallback to simple text inputs in very old browsers. Modern browsers also provide an integrated validation of the time ranges. In older browsers, this will be done latest on server side.
This implements #124

This implements #174

This implements #180

Add flag (default value true)
Use for wiki export
Add migration, translation & test
This implements #178

Fix issue detected while creating test

This includes a new helper method to assert the existence of a particular message

Introduce framework to simply test correct rendering of views
Create tests for dashboard views
Create tests for plan views
Create tests for default admin views (add and change) of AKModel models

Use event slug and timestamp in filename for slide export

See merge request !147

Improve scheduler

See merge request kif/akplanning!146

Show total count of violations as number, but only mark in orange if there are any violations that are not manually resolved already

Allow AKSlot creation via scheduler

Closes #120

See merge request !145

This implements #120

Use target parent for virtual room buttons on room detail page, too

See merge request !144

Use target parent for remaining virtual room buttons on AK detail page, too

See merge request !143

Use target parent for going to virtual room buttons

See merge request !142

This ensures correct loading if AKPlan is called from within a frame, e.g., in Venueless

Fix room adding form

See merge request !140

Make sure calendar is only loaded when event was already set