Add topic selection to inline thread editing, fixing errors
Add topic selection to inline thread editing, fixing errors

Co-Authored-By: Brian Talbot <btalbot@edx.org>

TNL-549

Conflicts:
	common/static/coffee/spec/discussion/view/discussion_thread_edit_view_spec.js
	common/static/coffee/src/discussion/discussion_module_view.coffee
	common/static/coffee/src/discussion/views/discussion_thread_edit_view.js
	lms/djangoapps/django_comment_client/forum/views.py

edx-solutions/edx-platform,edx-solutions/edx-platform,edx-solutions/edx-platform,edx-solutions/edx-platform