field editor section expand/collapse on label click

Based on Jared Jones’ idea for the collapsible wrapper component.

Collapsible field editor sections should expand and collapse when the label or title is clicked, not just when the little arrow is clicked.

We are running the ‘desktop’ skuid pages on large tablets, and the little expand collapse arrow is just too small. We’ve had to create our own ‘collapsible’ editors with pagetitle buttons and conditional rendering.