Fixes #20 Posting with knockout templates

@gholtslander @jrans-va

Posts now use knockout templates instead of php string substitutions. I think it looks pretty sweet, but I am excited to see the diff on GitHub
I don't even use this, actually. I made an executive decision that no one should be given the choice to use modrewrite, and I'll just assume they're doing it themselves if they want to, so the link will always be index.php?whatever