nfe: simplify identifyer mocking

Change-Id: I66e5b418ddc05af492b507d67bb885234a9b9bf1
till: Remove id from window title

Change-Id: I33e85b0b8c0e90814ddb0d2994b344d0efb0747a
Merge changes I33e85b0b,I66e5b418

* changes:
  till: Remove id from window title
  nfe: simplify identifyer mocking