* updating vendor files
* updating class syntax (to new FA-based classes) for all UI elements
* correcting broken tests

JIRA: PLAT-348

Adding decline button in fake payment page.
In of case ERROR, CANCEL, and DECLINE removing auth_amount from test cybersource2 and payment fake.

TNL-997

div selector is not closed properly in the redemption page html

SASS compilation variable conventions update, focusing on basic colors, baseline variable usage for padding and margins, ui-depth extends, along with other small fixes. The intent with this is to not have any user-facing impact, and instead move us closer toward having files that use our newer sass conventions.

Also fix failing JS test which was looking for a removed button.

ECOM-869 Update copy and hide supplementary content wrapper and requirement blocks if user is inactive

update '_delete_item' method for draft only modules and update delete_orphans management command

fix test_courseware which fails due to invalid future date

These are used only in edx-documentation repo now

Copy clean up

add script to upload/download pip cache directories from S3

update all-tests.sh to use pip-download-cache from S3

update pip-accel to version 0.22