Emby 2.2.9 backport plus Jellification#7

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ShaheedHaque wants to merge 5 commits intojellyfin-archive:masterfrom

ShaheedHaque:master

Commits on Dec 28, 2020

Emby Logos and Themes changed to Jellyfin
computersandstuff
committed

Commits on Mar 18, 2021

Update README.md
computersandstuff
authored

Commits on Jul 3, 2021

Commits on Jul 4, 2021

Provide some installation notes and a helper script. Resolves #6.
ShaheedHaque
committed