Merge pull request #4356 from edx/markhoeber/documentation/publishing-changes

...en_us/course_authors/source/Images/Course_Outline_LMS.png

...uthors/source/Images/Live_Course_Instructor_Dashboard.png

...s/course_authors/source/Images/Live_Course_Staff_View.png

...course_authors/source/Images/Live_Course_Student_View.png

...ourse_authors/source/Images/Live_Studio_from_LMS_Unit.png

docs/en_us/course_authors/source/Images/Student_Progress.png

docs/en_us/course_authors/source/Images/Units_LMS.png

docs/en_us/course_authors/source/Images/outline-callouts.png

...s/course_authors/source/Images/outline-create-section.png

docs/en_us/course_authors/source/Images/outline-delete.png

...ors/source/Images/outline-drag-new-location-collapsed.png

...ourse_authors/source/Images/outline-drag-new-location.png

...n_us/course_authors/source/Images/outline-drag-select.png

.../course_authors/source/Images/outline-expand-collapse.png

...s/course_authors/source/Images/outline-new-subsection.png

docs/en_us/course_authors/source/Images/outline-new-unit.png

...en_us/course_authors/source/Images/outline-with-units.png

docs/en_us/course_authors/source/Images/outline_empty.png

docs/en_us/course_authors/source/Images/preview_changes.png

docs/en_us/course_authors/source/Images/preview_mode.png