This patch attempts to address some scalability concerns, primarily through the use of
eager loading ('includes'). For example, on the /users/ page, if you had 100
users, you'd have 100 separate queries; eager loading queries them all at once.
There are other minor efficiency fixes as well. However, this isn't really a
comprehensive review (I figure that's a 1.1 task), so there are probably other places
that could use a tuneup.
Mainn