Feature request: keystroke option to keep adding new items without mouse click

[johanna-bodnyk]

When adding multiple items in succession, it would be great to be able to hit shift+enter (or just tab) to create a new item and jump to the next line instead of having to use the mouse to click "Add new item" (right now when I tab from the last weight field in Chrome the "Galen Maly" link in the footer gets focus).

If such a key combination already exists, would be helpful to add it as a mouseover on the "Add new item" button so folks know what it is.

Thanks!