Reforestation for VP v.5

It's the same mod as the original with some modifications for VP

• Can't plant on snow.
• Workers can plant a forest and/or a jungle depending on the latitude.
  
• Small chances of having a resource that appears but only for camps, plantations or lumbermills.

Credits:

• framedarchitecture : creation
  
• civplayer33 : no snow
• adan_eslavo : lua, sql correction
  
• gwennog: art, sql

To talk about it