AsantiKeypad strings: Fix QWERTY/QWERTZ mismatch and word order

- the main purpose of the 'asanti' keyword use in label strings is
  to get the asanti specific keyboard layouts nicely grouped together
  in the alphabetically sorted listing of all available keyboard layouts
  => the asanti keypad label strings should always start with 'asanti'

Change-Id: I7e3fb5e57a80bc0ec0d0bb5a4b38ff8a72ddafa0