adjust zooming for DPI
refactor activities
Merge branch 'master' of https://github.com/nutiteq/hellomap3d

Conflicts:
	AdvancedMap3D/src/main/java/com/nutiteq/advancedmap/activity/AdvancedMapActivity.java
	AdvancedMap3D/src/main/java/com/nutiteq/advancedmap/activity/Online3DMapActivity.java