Change-Id: I0062200a0181a491690115ac0fab8d11358e2f14

For German : handle "ae", "oe" and "ue" to be alternate forms for
umlaut-bearing versions of "a", "o" and "u".

Issue: 3275926

Change-Id: I056c707cdacc464ceab63be56c016c7f8439196c

When entering a word without accents the user expects the system to
add accents automatically if there is no other matching word. This
patch ensures the accented version is promoted accordingly and
autocorrection really takes place.

Issue: 3400015

Change-Id: I8cd3db5bf131ec6844b26abecc1ecbd1d6269df4