stop listing changes that aren't recent

Recent changes currently shows Ethan having edited "flexible email+example" (which he did edit), and +discussion (which he did not), and updating +tips and +howto (which he also did not). Two notification emails went out, one saying that Ethan had edited +example, and one saying that John had:

edited flexible email+example
updated flexible email+howto
edited flexible email+description (note that this did not show up in RC)
updated flexible email+tips
edited flexible email+discussion