Add scan percentages (fixes #1030)

lib/model/rwfolder_test.go

@@ -241,7 +241,7 @@ func TestCopierFinder(t *testing.T) {
 	}
 
 	// Verify that the fetched blocks have actually been written to the temp file
-	blks, err := scanner.HashFile(tempFile, protocol.BlockSize)
+	blks, err := scanner.HashFile(tempFile, protocol.BlockSize, 0, nil)
 	if err != nil {
 		t.Log(err)
 	}