QmlDesigner.Instances: fix for Mac OS and Qt 4

The QSharedMemory implementations of Qt5 and Qt4
on Mac seem to be incompatible.

We seem to have the same bug casually for Linux.

Until we solve the real issue this serves as a quick fix.

Change-Id: I686e3e94b6bb777b96f8c68cac6036c18b8d070d
Reviewed-by: Marco Bubke <marco.bubke@digia.com>
QmlDesigner.Instances: fixing spelling mistake

Change-Id: I26f822fac1702e83f8f39747106c0fd3ebc22202
Reviewed-by: Marco Bubke <marco.bubke@digia.com>
QmlDesigner.Controls: updating sheets for Controls

Updating sheets for QtQuick.Controls:

* Adding enabled to Button
* Adding translation to CheckBox
* Adding translation to RadioButton

Change-Id: I7d312c19e14cd7d653f0878cbae8af66641aa7f7
Reviewed-by: Thomas Hartmann <Thomas.Hartmann@digia.com>