Show a default post title even if it is empty

This fixes a problem where the schedule process would just show you an
empty link when a post with no title was scheduled

Fixes #15
If 6 or more consecutive digits then assume it's a camera filename

Use the default filename instead - camera filenames make for a bad post
title
Only clear the auto-saved detail that was published

Fixes a bug where all the details were cleared on the first post
published. This meant that if an error occurred the details would be
lost
Update plupload to 1.2.1
Fix plupload shim being full width on first upload

Fixes #13

Problem only happened when there were no uploads, and an upload was
started