[PATCH] Make map dot more visible

[Dirk Hohndel]

subsurface at henrik.synth.no writes:

> From: Henrik Brautaset Aronsen <subsurface at henrik.synth.no>
>
> The OSM_GPS_MAP_SOURCE_VIRTUAL_EARTH_HYBRID shows cities as red dots
> in a couple of the zoom levels.  Make the dive dots larger and
> yellow to make them stand out.

While red was reminiscent of the standard dive flag color I do like this
change - the hybrid map has a very dark blue for the oceans and the tiny
red dots were a bit hard to spot there...

Pushed.

/D