Add an RSS feed for notes. Next up, replacing the RSS navlink with a
page containing links to both my posts and notes RSS feeds. When I get
ATOM and WebSub, it'll have links ot those too.
Also fixed some typos and switched "Posted" to "Noted" in the context of
notes.
They're not interactive elements and there's no hint that they should be
hovered on. Wrapping them in an <abbr> would just make the markup even
more overcomplicated, so I just dropped the titles.
Split up some verbose and repetitive templates to use nested templates.
Cache some templates that don't need to be re-built every time.
Reading time: switch "a" to "an" when followed by the number "8".
Improve whitespace alignment a bit.
