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]
Wrap ModuleSystem and DescriptorSystem into a single object, to continue holding up the XModule house of cards

[PLAT-191]
Correct script exit status
TE-567
Merge pull request #5783 from cpennington/proxy-through-module-system-to-descriptor-system

Fix PLAT-191
Merge pull request #5291 from fmyzjs/s3_storgae

When s3fs cannot be accessed replaced with osfs
Merge pull request #5750 from edx/frances/fix/receipt-layout-fixes

Verified Receipt page layout fixes
Merge pull request #5806 from edx/ammar/te-567

Correct script exit status
Load OVA JS with requireJS in LMS.
Fix.
Added missing dependencies.
Wrap totality of OVA template JS code in requireJS.