[FIX] v2.ODataModel: API doc, oError object

- fix API doc for remove
- fix oError object for single requests
- ODataListBinding: pendingRequests for $count requests must be false

Change-Id: I0909c2bee83961d870a0ac86edcaac496d58a67d
Merge "[FIX] v2.ODataModel: API doc, oError object"