Resolve "Support i18n directly in Vue"

Closes #727

See merge request !1086

Fix integration of django-oauth-toolkit with version ^2.0

See merge request !1087

Update dependency python-gnupg to ^0.5.0

See merge request !1081

Update dependency django-oauth-toolkit to v2

See merge request !1017

Remove Django debug toolbar

See merge request !1084

The DJDT is tightly coupled with Django templates, which we will not
use for the frontend anymore.

Rewrite changelog after 2.11 maintenance release

See merge request !1083

Mention 2.10.2 in changelog

See merge request !1082

Bump dev version to 3.0.dev2

See merge request !1080

Automatically clean up OAuth tokens after 24 hours

See merge request !1077

Require login for GraphQL

See merge request !1076

Webpack development build

See merge request !1079

Load vue style

See merge request !1078

Resolve "Change `REPORTS` to user's name"

Closes #721

See merge request !1075

Resolve "Prettify footer on Vue-enabled pages"

Closes #719

See merge request !1073

Resolve "Fix translations on Vue-enabled notification pages"

Closes #720

See merge request !1074

Resolve "Fix language select dropdown on Vue-enabled pages"

Closes #718

See merge request !1072