Merge pull request #3496 from edx/markhoeber/documentation/doc-327

Fixed all links in release notes
Reorganize information in CONTRIBUTING.rst, link to ReadTheDocs
factor out google analytics ids (LMS-2555)
Set the page in the correct place.
Fixed accessibility labels are not always created in problems.
STUD-1524
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
Revert "remove location of item from loc_mapper and cache"

This reverts commit d2b8b4f0dd43cfec379b2e12cc9f723ee0fab7d6.
Merge pull request #3515 from edx/zub/revert/std1441/deleteitemfromlocmapper

Revert "remove location of item from loc_mapper and cache"
temporary fix for xblock settings scroll
UX-623
Merge pull request #3002 from edx/dcs/status-object

Convert CAPA inputtype statuses from strings to objects,
Merge pull request #3514 from edx/waheed/stud1514-toggle-cheatsheet-not-working

Fixed advanced editor not working due to cheatsheet undefined.
Correcting JSON
fixed JS link and add contributor guidelines to change log
Merge pull request #3516 from edx/frances/bug/xblock-studio-editor

Fix for xblock settings scroll
Merge pull request #3467 from edx/clytwynec/add-auto-auth-page-object-for-lms-tests

Add AutoAuthPage to lms pages for bok-choy tests
Reset the jenkins python virtualenv before test runs.
Fix comment formatting and Timezone explanation
Merge pull request #3520 from edx/markhoeber/documentation/devdoc-changelog

added contributor guidelines to change log
crude fix for intermittent jasmine test failures