This allows us to enrich the build's commit property as a GitHub link.
This change also displays the property values using a monospaced font,
which I think looks a little nicer (especially the commit SHA).
This adds more metadata back into the Info.plist for a build. This
metadata is used with the About window. The reason I want the build
number back is so that we have a monotonically increasing number to do
self-updating with (i.e. Sparkle).
Fixes#1052
This implements the about window as a custom window with a view
controller. This lets us implement the proper responder chain so that
our custom close window IBActions do the right thing.
This has an additional benefit that we can easily customize this window
going forward.
