Modified Scroll path in premake.
Set selection for combobox and listbox.

- Clear selection for combobox.
- Log item errors for selections instead of asserts.
Fixes for compilation errors.
OnReset implementation.

- OnReset is called after data update. Allows windows to update their
  state.
- Fixed handling of ObjectEditor properties: AutoScroll, BlendMode, FXList
ChildList handling for Scroll objects.

- Make sure we do not interfere with auto creation of child objects.
  When an object has a ChildList property Scroll and orx will
  automatically create child objects. The children have auto generated
  names and should not be touched by OrxCraft. OrxCraft will load
  standalone version of the child objectcs - they will not be connected
  to the parent.
Adjusted sampleconfig for ChildList tests.