Update shipped map UIDs

The output formatting of yaml arrays was changed quite some time ago, which affected the contents of all our map.yamls (and so also their UIDs).  We have avoided committing any of these changes as part of other prs that introduced map rule changes, as per our policy for avoiding unrelated changes in prs.

This has lead to two issues:
- There is a lot of noise to sort through and discard when running the rule updater.
- The maps on the resource site were recently updated (including these formatting changes), which has left them out of sync with what we ship.  This will be the reason for http://www.sleipnirstuff.com/forum/viewtopic.php?f=82&t=16784 and the many missing maps on http://www.openra.net/games/.

This pr includes the result of opening and resaving all of our shipped maps.  It also includes a fix for mission maps (which otherwise lose their PreviewVideo key), and trailing newlines in some of the mod rules.