Fix potential NPE

Could crash if there was a network error when communicating with the
download server.
Small amount of refactoring and cleanup
Re-organise resources in preparation for later
Add help dialog to menu
Make sure game isn't paused before auto-saving
Add help link to the wizard
Updated Finnish translations (PatrikSelin)
Update Dutch translations (Omni, klambrec)
Bump to 0.6.1-beta1
Merge branch 'beta'

Bump to 0.6.1

Conflicts:
	AndroidManifest.xml
	res/raw/changes.txt
Update Finnish translations (PatrikSelin)