Video Uploads Cleanup - Replace table grid layout with div grid layout and do related adjustments - EDUCATOR-562

EDUCATOR-44

AC-727
began changing colors in course content, files and uploads, and when creating a course

finished fixing contrast issues on files and uploads page

fixed advanced settings and issue with hovering in files and uploads

fixed color issues in studio home page and when hovering

fixed contrast in updates, pages, textbooks, and group configurations

fixed issues when configuring a section of a course in course outline

fixed hovering colors to make contrast more visible

fixed colors on the green button

AC-727

EDUCATOR-563

TNL-6060

All programs are now managed using the Django admin on the catalog service. This is the first in a series of commits removing use of the old programs service from edx-platform.

ECOM-4422

ECOM-6898

Disable (make read-only) the field for course code in the re-run form.  This will prevent creation of course runs with a different course code in the course key that are intended to stand for the same course in a program, which presents problems for the course catalog mapping process.

Tnl-4777

TNL-5899

Basic architecture of Maintenance App - SUST-19, SUST-42. Implement Force Publish Course view. SUST-46

Revert "Basic architecture of Maintenance App - SUST-19, SUST-42. Implement Force Publish Course view. SUST-46"

This reverts commit 27646b7e.

Basic architecture of Maintenance App - SUST-19, SUST-42. Implement Force Publish Course view. SUST-46

TNL-4115. Previously, course updates (which are intended to be posted with
dates, for sorting in the LMS) could be authored in studio with a valid
date, nothing, or a random string as the "date" for the update. As there
is no validation for this in studio, everything succeeded with no warning.

However, the LMS has problems parsing some of these values, and barfs when
loaded by learners.

The fix does two big things:
- gracefully handles invalid dates in LMS. These updates are now treated as
having a date of today, for sorting purposes.
- turns on validation in studio. Now, it is not only impossible to enter
invalid dates in studio, but notifications will draw the course author's
eye if any invalid updates were previously saved.

Test additions for this commit:

Adds:
- unit test for LMS parsing
- Jasmine test to confirm invalid dates cannot be set by the user
    -also adds event to setAndValidate instead of using a global object
- fix for lettuce test
    -It is no longer valid to enter the string "January 1, 2013" as this test
    had been doing. Keyed-in entries must use MM/DD/YY format.

Extends the Programs ConfigurationModel, cleans up Programs-related utilities and corresponding tests, and corrects caching. Uses the Programs API to list programs within Studio. ECOM-2769.

Instructor-led is changed to instructor-paced. Adds a label to the
course outline page to show the course pacing.

ECOM-2794
ECOM-2800

Also adds improved styling for course pacing settings, and unit tests
around query counts for self-paced courses.

ECOM-2650