Replaces the usage of `QIntValidator` with the `setRange` function available in the PDM framework for limiting integer input in UI fields.
This approach provides a more direct and maintainable way to specify value ranges for UI elements.
This change simplifies the code and reduces dependencies.
* Remove obsolete base class
* Add conversion between one/zero-based IJK
* Move code to RiaTextStringTools
* Add automatic update of grid cell curves when clicking in 3D view
* Fix missing conversion to QString