Update testSetup.sh, put dev blah first in path
Add post ID on all posts

This is in preparation for comments (in which we will use post IDs to
quickly and easily find what post a specific comment correlates to (by
grepping in the posts.idx file)

E.g.: grep "^${commentPostID}\>" posts.idx

Or something to that effect, will know later when we get that far.
Add more conditionals in blah

Git were throwing errors on first post (trying to add the previous
posts config on a previous post that doesn't exist (since it is the
first post...))