SFC-UI - adapted to new YANG models

+ Support for classifier CRUD operations
+ Classifier is now attachable to SFC
+ SFF adapted to new YANG models
+ SFF now supports OVS augmentation
+ various bug fixes and improvements

Change-Id: I51f5625bf845be681a2f1407d976f182bedc05da
Signed-off-by: Andrej Kincel <akincel@cisco.com>
Signed-off-by: Martin Lauko <malauko@cisco.com>