factor out google analytics ids (LMS-2555)
Revert "remove location of item from loc_mapper and cache"

This reverts commit d2b8b4f0dd43cfec379b2e12cc9f723ee0fab7d6.
Fixed advanced editor not working due to cheatsheet undefined.
STUD-1514
Merge pull request #3514 from edx/waheed/stud1514-toggle-cheatsheet-not-working

Fixed advanced editor not working due to cheatsheet undefined.
Merge pull request #3505 from edx/adam/google-analytics

factor out google analytics ids (LMS-2555)
Merge branch 'release'