Improve rerun test

for troubleshooting TNL-692
Update wording per Doc
When s3fs cannot be accessed replaced with osfs
reorg of the receipt page header to match rest of the flow; removed cart-list class from receipt page wrapper
Remove proxying of resources_fs, and add a unittest that exposes the problem

[PLAT-191]
Fixes for MOB-836 and MOB-766 and MA-96.
Studio: visually styling current unit on course unit/container view's mini outline
Studio: correcting minor Sass indent and property syntax issues
Show current unit in unit outline.

TNL-291
courseware header bar should not overflow shopping cart button TNL-722
generalize draft import/export TNL-574

add test for videomodule

Import drafts handles modules w/o xml_attributes
and ones using the old parent_sequential_url pointer

Handle drafts for modules which don't define nor extract xml_attributes

Support  and  in get_items qualifiers

Unit test for   value query
Add the ability for course staff to specify a Survey and make it required so that a student must fill it out before starting the course
Merge pull request #5764 from edx/dan-f/highlight-active-unit-in-outline

Highlight active unit in studio container page's outline
Merge pull request #5538 from edx/adam/generalized-draft-import-export-2

Adam/generalized draft import export 2
Wrap ModuleSystem and DescriptorSystem into a single object, to continue holding up the XModule house of cards

[PLAT-191]
Add email template for verified certificate date
Merge pull request #5765 from edx/carol/docs/DOC-1100

Add email template for verified certificate date
Merge pull request #5724 from edx/zoldak/improve-rerun-test

Improve rerun test
Commenting out flaky string input test case
Merge pull request #5803 from Stanford-Online/caijim/resetbutton

Commenting out flaky string input test case