[5.0] same behaviour in koo and koopos with pos-mode

[Christophe CHAUVET]

In some circumstance user with touchscreen POS use keyboard, and use touchscreen to focus on field or action a button.
With koopos the keyboard is always enable, and no possibility to disable it

I've made a patch to reproduce the behaviour in koo and koopos, to only onscreen keyword when --pos-mode argument enable.

[Albert Cervera i Areny - http://www.NaN-tic.com (albert-nan)]

I don't think this is the place to make the check. If you don't want the application to show the keyboard simply do not install PosEventFilter in QApplication:

import Pos
app.installEventFilter( Pos.PosEventFilter(mainWindow) )