Adapt 9829 move from central extended singleton/added imports/exports#222

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eleanor-heath wants to merge 3 commits intoadaptlearning:masterfrom eleanor-heath:ADAPT-9829-move-from-central-extended-singleton

+279-264

Commits on Feb 11, 2021

ADAPT-7911-narrative-issues-with-images-on-IE11
Eleanor Heath
committed
ADAPT-7911 - calculation for IE11 offset
Eleanor Heath
committed

Commits on Mar 9, 2022

ADAPT-9829 - import a11y and device singletons and fixed linting issues and added imports/exports
Eleanor Heath
committed