qmlphotoviewer demo: Editing photo group labels doesn't update FEP display correctly.

qmlphotoviewer demo: Editing photo group labels doesn't update FEP display correctly:

1) Deleting letters using virtual keyboard delete them from actual label but not from virtual keyboard display. This happens both with mini qwerty and alphanumeric keyboards.
2) Entering new letters using mini qwerty virtual keyboard only inserts letters into the actual label but not to the virtual keyboard display.