[INTERNAL] v2.ODataListBinding getDownloadUrl

- added method according to old implementation
- added unit tests for both versions

Change-Id: I4d9f063567205000115e31e1b17ed46f1d9dde4f
[FIX] v2.ODataModel callFunction fault tolerance

- added checks for wrong types to be imported and stop recursive data
import
- enhanced documentation 

CSS: 1472003923
Change-Id: Ia97aedb544e4dc294f147022ca0f3eac6a31f14f
Merge "[INTERNAL] v2.ODataListBinding getDownloadUrl"
Merge "[FIX] v2.ODataModel callFunction fault tolerance"