Improve redraw speed of build allocation table (#3831)
Improve redraw speed of build allocation table (#3831)

- Reload table data in one go, rather than one row at a time
- Reduces redraw time (in one example) from ~4s to ~0.05s
SchrodingersGat/InvenTree,SchrodingersGat/InvenTree,SchrodingersGat/InvenTree,SchrodingersGat/InvenTree,inventree/InvenTree,inventree/InvenTree,inventree/InvenTree,inventree/InvenTree