Added extruded shapes.
Messing with shape display.
First cut at roll/pitch/yaw
Roll/pitch/yaw working for extruded shapes.
Minor cleanup
Added drawable tweakers for per-frame changes.  Screen markers with multiple textures are back.
Can now mix screen space and regular objects.
Extruded shapes now use polytopes directly in the selection manager.  Makes their selection more precise.
Fixed an offset problem with spheres.
The test paging layer for vectors was confused by the maximum zoom level.  Exposed the maxTiles parameter in the paging layer.
Cleaned up gesture feedback for delegate in Maply view controller.
Ignoring taps from another view controller.
Draw priority ordering problem in vector test layer.
Merge commit 'ad1513f' into adsbview20141020