Update poetry.lock with 2.0b0

See merge request !171

Resolve "Update feature list"

Closes #139

See merge request !170

Resolve "Fields must be unique per site"

Closes #137

See merge request !168

Prepare release 2.0b0

See merge request !169

Resolve "Fix migrations"

Closes #138

See merge request !167

Write changelog for 2.0b0

See merge request !166

Translations update from Weblate

See merge request !165

Currently translated at 100.0% (128 of 128 strings)

Translation: AlekSIS/AlekSIS-App-Chronos
Translate-URL: https://translate.edugit.org/projects/aleksis/aleksis-app-chronos/de/

Update translation files

See merge request !164

Merge branch '135-make-chronos-compatible-to-other-haystack-search-backends-and-rules-based-search-filtering' into 'master'

Resolve "Make chronos compatible to other haystack search backends and rules-based search filtering"

Closes #135

See merge request !162

Merge branch 'master' into 135-make-chronos-compatible-to-other-haystack-search-backends-and-rules-based-search-filtering

Resolve "Rename rules to allow differentiation from permissions"

Closes #134

See merge request !161

Resolve "Sync Copyright in README.md and apps.py"

Closes #136

See merge request !163

Resolve "Check generation of regular timetable"

Closes #124

See merge request !153

Resolve "Update copyright"

Closes #133

See merge request !160

Resolve "Missing migrations"

Closes #132

See merge request !159