### Bug report
The Ctrl + Shift + Arrow key keyboard shortcut should select a range in the row/column starting with the active cell and ending with the first cell in the row/column that has a value: [list of shortcuts](https://docs.telerik.com/kendo-ui/controls/data-management/spreadsheet/end-user/list-of-shortcuts) used by the Spreadsheet. It works similarly in Excel. 


### Current behavior
The selection does not end at the first cell that has a value, it ends with the last cell of the row/column.  

### Expected/desired behavior
The expected behavior should be as described in the documentation: "Extends the selection of cells to the last nonblank cell in the same row or column as the active cell."

### Environment

* **Kendo UI version:** 2018.2.620
* **Browser:** [all ]