several misc things to publish before statements focus

Merge pull request #245 from w3c/slhenry-patch-1

Update translations.md

acks to footer on all translations page

Merge pull request #245 from w3c/slhenry-patch-1

Update translations.md

update wcag 3 Intro (and minor ones from last few days)

2021-03Mar-02-a

Apply automatic changes

urg forgot to merge the PR first *again* :-(

2021-02Feb-25-b

Apply automatic changes

update presentations metadata for translation

2021-02Feb-25-a

Apply automatic changes

media acks and something else I forget...

2021-02Feb-24-b

Apply automatic changes

fix intro page SVGs (thanks, Steve!)

2021-02Feb-24-a

Apply automatic changes

Media Resource footer updates

2021-02Feb-22

Fix links

wcag 3 intro

2021-02Feb-05-a

Apply automatic changes

Russian translations of Principles page

2021-02Feb-04-a

Apply automatic changes