conf: add future options to docs

These don't yet exist but we'll need them quite soon.
conf: improve README layout
svn: needs cleanup first
update: allow cli specification of projects to update
updater: allow subprojects
update: add --list option to get project list
project: fix VLC project name
updater: hardcoded checkout destination
conf: document translation_dir
project: add translation_dir for VLC
updater: export subprojects to their own dirs
project: add Audacity
update: handle non-existant projects
project: add ISO codes
updater: add handling for subprojects
projects: add Debian Extras

iso-code - this was moved to its own package
Commented out some manpage subprojects that need investigation.
updater: only do multi if there is an array
projects: add Pidgin
updater: remove noise
project: add Postgres