Get rid of Qt object types in the code except qt_shapes module

[SunnyBerlin]

We have lot of dependencies from Qt objects ( like QRect , QPoint... ) all over the code.
Will be good to replace them with our own objects, or primitives ( or at least make typedefs )
and keep Qt referencing only in qt_shapes module.
This will make our code more generic and library independed, e.g. rq.getObjectInRect(int x1, int y1, int x2, int y2)