New Dev packet: TerrainGenerator and updated gif2mng

[Admins]

If you download the new developer package with setup.exe it now contains the terrain generator, previously you needed to download it from the forum. The terrain generator is now saving the height modifcations (zooming + changing heights) directly into the levels not into the gmap, it was 'bugged' before.

The gif2mng program now tries to fix the transparency of gifs so that they work better in v3.0. You can also convert png to png to fix the transparency. When using gifs in the game then the new v3.03 will try to fix it on the fly.