Compose: correct the zero-width stuff

Apparently U+200B was a 'space', with aU+200D being a 'joiner'.
Compose: stuff
environ: also set $HOME if missing
environ: or maybe don't
fonts.conf: disable bitmaps for CJK

I can't read the languages either way, and antialiased looks better this week
muttrc: do not auto-collapse read threads

Makes it easier to work with my scraped Reddit messages
Merge branch 'master' of https://github.com/grawity/dotfiles