MonkeyRunner tries to zoom

[tobrun]

11-09 15:37:16.760 2765-2765/com.mapbox.mapboxsdk.plugins.testapp E/AndroidRuntime: FATAL EXCEPTION: main
                                                                                    java.lang.NullPointerException
                                                                                        at com.mapbox.mapboxsdk.maps.NativeMapView.addOnMapChangedListener(NativeMapView.java:1085)
                                                                                        at com.mapbox.mapboxsdk.maps.Transform.setZoom(Transform.java:241)
                                                                                        at com.mapbox.mapboxsdk.maps.Transform.zoom(Transform.java:218)
                                                                                        at com.mapbox.mapboxsdk.maps.MapKeyListener$TrackballLongPressTimeOut.run(MapKeyListener.java:264)
                                                                                        at android.os.Handler.handleCallback(Handler.java:730)
                                                                                        at android.os.Handler.dispatchMessage(Handler.java:92)
                                                                                        at android.os.Looper.loop(Looper.java:137)
                                                                                        at android.app.ActivityThread.main(ActivityThread.java:5103)
                                                                                        at java.lang.reflect.Method.invokeNative(Native Method)
                                                                                        at java.lang.reflect.Method.invoke(Method.java:525)
                                                                                        at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:737)
                                                                                        at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:553)
                                                                                        at dalvik.system.NativeStart.main(Native Method)

When MonkeyRunner is ran on the test app, it can be fast enough with providing touch events before the nativemapview has been initialised. Currently a nullpointer is thrown. Touch events shouldn't be forwarded if the map isn't able to handle them.

cc @ivovandongen