Fix translations in states causing failing assertions

Fix translations in states causing failing assertions

This is a smaller fix suitable for the release branch, merely adding support
for translations to the bytearray compilation step for states and ensuring a
consistent error message when qsTr is used in list models.

The proper fix will be done in dev that eliminates the entire intermediate
QByteArray storage for custom compilers.

Task-number: QTBUG-38492
Change-Id: If5171f16eb742c718e48b8bbcb265b0c241cd5e7
Reviewed-by: Lars Knoll <lars.knoll@digia.com>