ResourcesManager subclasses

QArrayResourcesManager : QVector based resources manager
QListResourcesManager : QList bases resources manager

Change-Id: I487716749dccb7cb75edc6556d93fc3bb96941ee
Reviewed-by: Sean Harmer <sean.harmer@kdab.com>
RenderClass have a default constructor.

Allows RenderClass to be used by the ResourcesManager

Change-Id: Icad9d26649858bc4a1c1dd61a233a4a46f5163ab
Reviewed-by: Sean Harmer <sean.harmer@kdab.com>