enabled prices from inapps_products.xml for Fortumo
Improve SkuManager.

Update Life sample.

Fix purchase id.

Update TrivialDrive sample.

Update Life Game Sample.

Update Trivial Drive sample app.

Add Nokia Store support to Life sample.

Minor fixes in Trivial Drive sample.

Add verify store public keys when add they in Options.Builder.

Add verify sku mapping.

Refactor Life sample.

Update sample.