I'm not sure if Google used to show the POI marker at the center location in
the past or if this is actually a new feature. Either way this appears to do
the right thing in my testing.
Note that we need a 'plus' to connect the point of interest cooridnates,
but a 'comma' to connect the map center coordinates.
Reported-by: Chirana Gheorghita Eugeniu Theodor <office@adaptcom.ro>
Signed-off-by: Dirk Hohndel <dirk@hohndel.org>