Tags displayed in passage map (+ fixes)

* The first few tags are displayed in a peach ribbon along the bottom of
the passage, which should be distinctive from a distance and at low zoom
levels.
* Decided to give Jonah and Sugarcane's .content div the old Jonah .body
class, too.
* Now, for backwards-compatibility, if <<display>>'s argument fails to
parse, it will now try and interpret it as an unquoted passage name
string before failing.