Add "Copy/Edit Raw Value" to Field Label Menu

[benhaynes]

We already have a menu for form field labels, I propose we add another option here that allows users to copy the field's raw value to their clipboard. Perhaps even lets users edit the raw value directly (in a modal)... which might make copying/pasting data easier for some interfaces (eg: non-relational repeaters).

[connorwinston]

This was implemented.