Resolve "Progress page tries to redirect even if redirect URL is empty"

Closes #469

See merge request !650

Use term "application" for all authorized OAuth2 applications/tokens

See merge request !646

Resolve "Register data checks only one time"

Closes #468

See merge request !649

Use importlib instead of pkg_resources to discover dist

See merge request !642

Update changelog with unreleased changes

See merge request !645

Resolve "Replace django-pwa by own views/templates"

Closes #450

See merge request !641

Resolve "Replace term "social account" with "third-party account""

Closes #459

See merge request !644

[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