BufferObject: find minimal buffer larger than requested size
add Map.setTheme(IRenderTheme)
SyncPool/Pool: allow to pool any subclass of Inlist
cleanup: Extrusion style
desktop: change run parameters
gdx: add esc to exit
gwt: use slf4j in libgdx
gwt: increase fps
gwt: allow to create empty textures..
gwt: print error message only
testing: GL_STATIC_DRAW buffers
add GLShader:

- load shaders from assets
- start to move shaders to asset files
use GLShader for TextureLayer
use GLShader for LineLayer
fix comments
use GLShader for PolygonLayer
use GLShader for LineTexLayer
use GLShader for BitmapLayer
use GLShader for MeshLayer
use GLShader for ExtrusionRenderer