[Docs] Add missing proxy upstream to nginx config

See merge request !636

[Docs] Fix WSGI module path

See merge request !638

Thanks to Felix Schoppe!

next master verison is a new feature release; maintenance and 2.0 stable release
happen in release branch

Bump to next dev version 2.0b1.dev0

See merge request !635

Resolve "Fix misnamed rules"

Closes #461

See merge request !634

Prepare release 2.0b0

See merge request !632

Documentation for beta release (Documentation for first release part 1)

See merge request !333

Merge branch '158-documentation-needed-for-first-release' of edugit.org:AlekSIS/official/AlekSIS-Core into 158-documentation-needed-for-first-release

Update dependency libsass to ^0.21.0

See merge request !633

Merge branch '158-documentation-needed-for-first-release' of edugit.org:AlekSIS/Official/AlekSIS-Core into 158-documentation-needed-for-first-release

Update dev documentation

See merge request !536

Resolve "Remove managers from DashboardWidgetOrder migration"

Closes #458

See merge request !630

Translations update from Weblate

See merge request !631

Resolve "Update feature list"

Closes #457

See merge request !628

Currently translated at 99.6% (574 of 576 strings)

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