Fix dropshipping address lookup: preserve order ID across grid navigation

[logicguy1]

What are the changes about?

• Fixed a fatal error when selecting an address in the dropshipping lookup $id (order ID) was lost when the datagrid form submitted for sorting, searching or pagination, because the GET form discards all URL parameters not included as hidden inputs
• Added an extraParams option to create_datagrid / render_datagrid in grid.php, allowing callers to inject arbitrary hidden inputs into the grid form. Backwards compatible all existing grids are unaffected
• Fixed double scrollbar in the dropshipping grid by wrapping it in a 89% height container
• Made the "Leveringsadresse opslag" button visually clearer that it is clickable (not just a label), and gave it a dedicated translation key (2954) across DA/EN/NO

Have you checked the following?

• I have updated relevant documentation at https://github.com/DANOSOFT/saldi/wiki
• I have checked that i am not linking to any external resources such as external style- or javascript-files, that could compomise stabilaty
• I have read and understood the developer guidelines
  https://docs.google.com/document/d/1GOmomtvKf21OV2VWNOIPweDi4gJHpMCK5qXzrPrypUc/edit?usp=sharing