fix JSON navigation history bugs
"page 0" -> "front page"
post building should not depend on JSON navigation
fix Thread Stats bug
stop page list from appearing in threads
fix nonrebuilding of index

Also hide page list in threads instead of deleting.
rewrite relative URL to tolerate slugs
update quote link regexp to accept /thread/
tolerate new image links
update URLs to 4cdn.org
fix hiding of icons outside header when icons in header are disabled
move page list hiding to CSS
minor fix
change vocaroo embed to HTML5
get rid of unwanted style on embeds
update CHANGELOG
Release 4chan X v1.7.9.