12810: increase price width

- make it to 10% which makes sure that any price value acceptable by the system is displayed fully
- Reduce On Hand to 8% to make up for some space for the above

app/views/admin/products_v3/_table.html.haml

@@ -21,8 +21,8 @@
       %col.col-sku{ width:"8%", style:"min-width: 6em" }
       %col.col-unit_scale{ width:"8%" }
       %col.col-unit{ width:"8%" }
-      %col.col-price{ width:"5%", style:"min-width: 5em" }
-      %col.col-on_hand{ width:"10%"}
+      %col.col-price{ width:"10%", style:"min-width: 5em" }
+      %col.col-on_hand{ width:"8%" }
       %col.col-producer{ style:"min-width: 6em" }= # (grow to fill)
       %col.col-category{ width:"8%" }
       %col.col-tax_category{ width:"8%" }