Properly center icons, improve spawns performance
Properly center icons, improve spawns performance

Add in size so that Leaflet centers the icons properly, replace
obsolete Leaflet canvas option with the new one to improve performance
of displaying spawn points on the map.

sebast1219/Monocle,sebast1219/Monocle,tallypokemap/Monocle,RobTwoThree/Monocle,RobTwoThree/Monocle,Claod44/GokemonReborn,RobTwoThree/Monocle,evenly-epic-mule/Monocle,evenly-epic-mule/Monocle,RobTwoThree/Monocle,DavisPoGo/Monocle,tallypokemap/Monocle,DavisPoGo/Monocle,tallypokemap/Monocle,evenly-epic-mule/Monocle,ZeChrales/Monocle,Claod44/GokemonReborn,DavisPoGo/Monocle,ZeChrales/Monocle,sebast1219/Monocle,ZeChrales/Monocle