feat: flag cleanup and minor fixes (#166) [BD-24][BB-4204]

This removes feature flags that were in place for development, but aren't needed in production.

* feat: set LTI 1.3 support enabled by default

* feat: Improve settings wording

* chore: Update translation files

* chore: Version bump

* quality: Fix pylint errors and improve waffleflag documentation

* doc: Add changes to changelog

* feat: Remove LTI 1.3 flags and enable services by default

* doc: Update NRPS ADR

* doc: Fix typo

* Update README.rst

Co-authored-by: Ned Batchelder <ned@nedbatchelder.com>

* Update README.rst

Co-authored-by: Ned Batchelder <ned@nedbatchelder.com>

* Update setup.py

Co-authored-by: Ned Batchelder <ned@nedbatchelder.com>

Co-authored-by: Ned Batchelder <ned@nedbatchelder.com>