* Use render_django_template for lti 1p3 launch errs
* Test % trans not found in lti 1p3 err templates
* Bump version to 3.4.6; Update ChangeLog

Signed-off-by: Giovanni Cimolin da Silva <giovannicimolin@gmail.com>

* Fix quote rendering by switching to Django template (from Mako template)
* Internationalize strings on LTI 1.1 launch page

Version 3.3.0 has already been released on PyPi but it was never updated here in that PR and hence there was inconsistency in the version number leading to wrong version bump in the successive PRs. This PR fixes the issue with the version number

feat: add test for consumer xblock with a keyset URL

feat: handle keyset URL failure cases

fix: refactor and clean the tests up

fix: generate translations

fix: version bump

Features:
Implement LTI 1.3 launch support.
Add LTI 1.3 passthrough views as LMS plugins.