Resolve "No redirect to login form on missing permissions in Vue app"

Closes #786

See merge request !1159

Merge branch '790-iframe-height-is-sometimes-not-set-updated-correctly-in-legacybasetemplate' into 'master'

Resolve "IFrame height is sometimes not set/updated correctly in LegacyBaseTemplate"

Closes #790

See merge request !1160

Merge branch 'master' into '790-iframe-height-is-sometimes-not-set-updated-correctly-in-legacybasetemplate'

# Conflicts:
#   CHANGELOG.rst

Resolve "Identicon is not shown even it should be"

Closes #784

See merge request !1165

Translations update from Weblate

See merge request !1156

Currently translated at 100.0% (115 of 115 strings)

Translation: AlekSIS/AlekSIS-Core-Frontend
Translate-URL: https://translate.edugit.org/projects/aleksis/aleksis-core-frontend/uk/

Currently translated at 100.0% (114 of 114 strings)

Translation: AlekSIS/AlekSIS-Core-Frontend
Translate-URL: https://translate.edugit.org/projects/aleksis/aleksis-core-frontend/uk/

Translations update from Weblate

See merge request !1158

Currently translated at 100.0% (638 of 638 strings)

Translation: AlekSIS/AlekSIS-Core
Translate-URL: https://translate.edugit.org/projects/aleksis/aleksis-core/uk/

Revert "Merge branch 'renovate/django-phonenumber-field-7.x' into 'master'"

See merge request !1157

This reverts merge request !1093

By the powers of the almighty Aleksolotl

See merge request !1152

Update dependency django-phonenumber-field to v7

See merge request !1093

Update dependency django-maintenance-mode to ^0.18.0

See merge request !1116

Update dependency django-allauth to ^0.52.0

See merge request !1134

Bump dev version to 3.0.dev3

See merge request !1153

Reformat

See merge request !1150

Translations update from Weblate

See merge request !1139

Currently translated at 71.0% (81 of 114 strings)

Translation: AlekSIS/AlekSIS-Core-Frontend
Translate-URL: https://translate.edugit.org/projects/aleksis/aleksis-core-frontend/uk/

Translations update from Weblate

See merge request !1138

Currently translated at 100.0% (715 of 715 strings)

Translation: AlekSIS/AlekSIS-Core
Translate-URL: https://translate.edugit.org/projects/aleksis/aleksis-core/de/

Update translation files

See merge request !1151

Remove debug print

See merge request !1146

Automatically allow CORS from ALLOWED_HOSTS and dev servers

Closes #772

See merge request !1142

Also, set base URL to not include the scheme

Use new, generic mechanism for registration of classes

See merge request !1144