Request for a cleaner UI

[matthewhorridge]

I would like the UI to look a bit cleaner. At the moment I find it hard to see actual field inputs. Elements butt up against each other.

Something like this would be an improvement.

In this:

• I removed the drop shadows from fields
• I removed the margin of 0 override in the CSS

Compare with the current default:

I understand that there is concern about multivalued fields but I don't find the current cluttered UI acceptable in appearence. The current clutter is a larger problem, for me, than the problem of rendering multivalued fields.

CC'ing @johardi incase he has relevant experience of this in HubMap