[FIX] sap.m.IconTabBar: HCB theme clean up

Cleaning up the css styles according the new implementation
specification;

Change-Id: Iad4a7d23d262b5d35abdaa3c9006222cc24d7da9
[INTERNAL][FIX] library.source.less updated!

Change-Id: Ibe8ffaf1ebe48c8ab53482e96be97cfc330447b2
[FIX] Token - HCB theme optimization

Cleaning up the css styles according the new implementation specification.

Change-Id: I3a807139d589141977cddd81d9795a1553225e1a
Merge "[FIX] sap.m.IconTabBar: HCB theme clean up"
Merge "[FIX] Token - HCB theme optimization"
Merge "[INTERNAL][FIX] library.source.less updated!"