Implements #92

Add twitter card meta tags

See merge request !51

Add meta tags to display a preview for the linked page on twitter

Hide protocol link for AK and wish submission form
Fix js/css for wish submission

Visualize interest click

See merge request !50

Improve plan (current & wall)

See merge request !49

Show full name of AK as tooltip
Scroll to current time

Add virtual room link to AK detail page

Closes #87

See merge request !48

First part of #89
Also fix #87

Introduce protocol link feature

See merge request !46

Add field to model
Use field in form
Display field in ak detail view

Show track in ak detail view
Update translations

Add link to room detail view in slot table
Fix location based nesting in plan

Implement CSV export for AKs

See merge request !45

Show info about requirements on event status page

See merge request !44

# Conflicts:
#   locale/de_DE/LC_MESSAGES/django.po

Allow usage of semicolon or comma for tag list in submission

Closes #84

See merge request !43

Closes #84

Prevent clearing of form when changing language in between

Closes #80

See merge request !42

Ask user if they really want to change the language as it will clear the form as soon as the main form on the page was edited at least once.
Fixes #80

Introduce hidden plan

Closes #60

See merge request !41

Closes #60
Add boolean flag to event
Hide plan for non-staff users when flag is set
Update translations

Fixes #83

Fixes #15

fixes #81

Introduce custom admin

Closes #47

See merge request !39

# Conflicts:
#   AKSubmission/locale/de_DE/LC_MESSAGES/django.po

Improve room view in plan and better link it

Closes #77

See merge request !40