refactor: RenderLayer does not need to hold reference to MapView
refactor: rename MapView -> Map, MapViewPosition -> Viewport
refactor: rename LayerManager -> Layers
refactor: move AndroidGLRenderer into GLView
- remove unused class
fix: clear static GLRenderer.BufferPool on init

fix: clear static BufferObject pool on init
- fixes garbage buffers when restarting android app
add closeQuietly for OutputStream

GWT Input/OutputStream does not implement Closeable interface ...
add TileCache interface
android: classpath
theme: formatting
cleanup + formatting
refactor: rename variable