Move the call to force readOnly to before the activation for the editors
that had it after their activation call.
Not having signals, currently dynamic changes of the editor read only
state are not really supported, and on windows some actions remained
activated.

Task-number: QTCREATORBUG-4774
Change-Id: I09a84c6e558ddf61aeedb928f8688f6ed65e89c0
Reviewed-on: http://codereview.qt.nokia.com/20


Reviewed-by: Tobias Hunger <tobias.hunger@nokia.com>