More Terrain Paints

While the current mod system doesn't seem to allow for completely new terrain paints, its possible to "recombine" eixsting ones, this includes 6 new terrain brushes:

• 7 existing versions of flowers, but using soil and dirt texture as base instead of grass
• 5 new tall flowers in different colors

I coudln't find a way to set the thumbnail images for the new paints, so they are just white.