CoH: Midnighter Arc guide

[dvandom]

I put this together during breaks from working out homework solutions today, I figured I'd ask for comments from CoX-playing folks on my friends list before releasing it into the wild, as it were. @dvandom's Guide to the Midnighter Arc (Hero Side).

ETA: I've been making changes in response to discussion, so if it looks like some of the comments make no sense, it might be because I altered the file since the comment was made. :)