Order newsletter items

Closes #179

See merge request !298

Add message to the end of the newsletter regarding language change

Closes #182

See merge request !299

Make  sure that members cannot cancel or change pizza order when not allowed

Closes #271

See merge request !295

Improve exam upload form

Closes #269

See merge request !294

Fix #271

Translate Thalia logo images

See merge request !300

Prefetch the users in the CommitteeInline

Was not possible to upload summaries at all

Remove old migrations

Closes #266

See merge request !296

Thanks, you've served us well.

Closes #266

Resolve "Unittest wiki api"

Closes #259

See merge request !286

Fix #269

Resolve "view on site is stuk in partners (vacancies)"

Closes #173

See merge request !293

Refactor parts of the CSS, fix style issues

Closes #220

See merge request !274

Fix ordering of numeric data in pizza frontend

Closes #116

See merge request !287

Add context

Zoals gezegd

See merge request !291

Make /crash superuser-only

See merge request !288

Backmerge of  1.1.1

See merge request !285

Fix/export event data

closes #258

See merge request !284

Add Open Graph tags.

Closes #260

See merge request !283

Makes the starting year for fixture users truly random

See merge request !280