Updates to GIFs and HoC content (#3678)

...b/libraries/decks/cartoonnetwork/01_cn-pick-character.gif

...ib/libraries/decks/cartoonnetwork/02_cn-say-something.gif

...lib/libraries/decks/cartoonnetwork/03_cn-glide-around.gif

src/lib/libraries/decks/cartoonnetwork/04_cn-collect.gif

src/lib/libraries/decks/cartoonnetwork/05_cn-add-score.gif

src/lib/libraries/decks/cartoonnetwork/06_cn-keep-score.gif

src/lib/libraries/decks/cartoonnetwork/07_cn-level-up.gif

...ies/decks/cartoonnetwork/08_cn-pick-another-character.gif

...ies/decks/cartoonnetwork/09_cn-level-up-say-something.gif

src/lib/libraries/decks/cartoonnetwork/1-cn-hideshow.gif

src/lib/libraries/decks/cartoonnetwork/10_cn-animate-run.gif

src/lib/libraries/decks/cartoonnetwork/2-cn-say.gif

src/lib/libraries/decks/cartoonnetwork/3-cn-glide.gif

src/lib/libraries/decks/cartoonnetwork/4-cn-pick-gem.gif

src/lib/libraries/decks/cartoonnetwork/5-cn-collect.gif

src/lib/libraries/decks/cartoonnetwork/6-cn-variable.gif

src/lib/libraries/decks/cartoonnetwork/7-cn-score.gif

...b/libraries/decks/cartoonnetwork/8-cn-change-backdrop.gif

src/lib/libraries/decks/index.jsx

src/lib/libraries/decks/txt/01_hoc-add-extensions.gif