Fixes http://b/2650378
On entering the selection screen, don't add the system language in addition
to other selected languages.
Change-Id: Id7a3b45df39a8493d17be668029eee139bf00ff3
Also add a summary text in the input language list for languages with
a dictionary so that users don't feel cheated when they pick a language
that doesn't happen to have a dictionary. Remove greek as it isn't an
extension of the QWERTY keyboard.
Move java code to a different directory so that the unbundled
version doesn't try to compile the native code again.
Change-Id: I05cf9e643824ddc448821f69805ccb0240c5b986
