Task-number: QTCREATORBUG-863
Reviewed-by: Friedemann Kleint

Task-number: QTCREATORBUG-948
Reviewed-by: dt

Update terminology QML project becomes Qt Quick project. Add information about creating Qt Quick applications.

New screenshots added for sections Setting Up a qmake Project and Quick Tour along with minor corrections in the document

Edit introduction to Quick Designer. Change product name to Quick Designer. Change terminology (widget becomes component). Update and add information about using Quick Designer. Update and add images.

For the custom wizards shipped by Nokia, extract their message
strings and add them to Qt Creator's ts files.

Prepare translations of wizards shipped by Nokia to be searched
in Qt Creator's qm-files.

Qt Quick Designer.

Reviewed-by: ckamm

Reviewed-by: Roberto Raggi

'variant' has been removed from the qml grammar: d1f019567, it's now 'var' only.