This change makes a few small improvements to our configForms frontend

code:

The default styling for <label> elements has been updated to exclude

<label class="ink-c-button__label">
Updated definitions for onRender() and onInitialRender() to be

  protected. This is more correct, and fixes warnings in code which

  inherits from these.
Use modelEvents in the ListItemView instead of manually calling

listenTo for everything.

Ran js-tests.
Used this with other code.