Kyle McCormick a69567b18b feat: default staff to courseware MFE if active (via jump_to) ...

The /jump_to/ LMS endpoint is used in a number of places
to direct users to courseware. It currently only redirects to
Legacy courseware URLs, which then conditionally may
redirect to the Learning MFE.

Two issues with this:
1. Performance Impact: In most cases, going to Legacy first
   is just an extra redirect.
2. Confusion for Privileged Users: Neither course nor global
   staff are auto-redirected from the Legacy experience to the
   MFE. Thus, these priviliged users confusingly never see the
   MFE by default; they must always manually click into it.

This commit makes it so that /jump_to/ directs
users to whatever the default courseware experience is
for them. For staff of courses active in the new experience,
this will impact (at a minimum) the "View Live"
links in Studio, all links on the old and new LMS
course outline, and the "Resume" links on the course
dashboard. Learners should see no difference other than
a performance improvement when following courseware links
from the LMS.

This also adds an optional 'experience=[legacy|new]'
query param to /jump_to/, allowing us to specifically
generate Legacy courseware URLs for the
"View in Legacy Experience" tool.

TNL-7796

2021-04-07 10:24:58 -04:00

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