UFO:Alien Invasion Code

* base/textures png crush.

* Recompressed all textures in base/textures/tex_misc with Trimage image compressor and commited those files, where a filesize reduction of at least 5% (up to 86.9%) was achieved

* [TEXTURE_.MAP_RESCALE-tex_misc/container003-0.25-0.3125]
* Rescaled all container003 textures on all map files and prefabs (TODO:repeat this operation in data_source)
* Replaced low-res, non power of 2 container003 texture with hq, high-res version
* Added new normalmap for container003 texture
* Updated LICENSES

* Reduced filesize of the tex_misc textures folder by compressing/optimizing the .png files with pngout

* GPL'd container textures for p0ss