Rerip existing X/Y move/ability/item flavour.
Rip remaining X/Y move/ability/item flavour text.

Same as before, two commits for nicer diffs.

Also I don't think I ever mentioned, but the only missing items are
unused and spoiler items, so I never added them.

Also ALSO I remembered the U+200B ZERO WIDTH SPACE in the flavour
text for Thick Fat and the Adamant/Lustrous Orbs.