NonConsumableItem and references removed.

Done iOS part (including native code)
NonConsumableItem class instances removed from Android native and impl.
README and changelog modified
Test product type changed to no_ads
Merge branch 'master' into nci_to_ltvg

Conflicts:
	Soomla/Assets/Plugins/Android/UnityAndroidStore.jar
	Soomla/Assets/Plugins/iOS/libUnityiOSStore.a
New jar and lib, merged submodules.
Updated soomla-unity3d-core to contain nci_to_ltvg changes of ios-core
Changed amount format in MuffinRush example
Changes in README and changelog
README modified
Merge branch 'master' into nci_to_ltvg

Conflicts:
	submodules/soomla-unity3d-core
Submodules updated with latest changes from master.