clean up terminology around 'operation info'

When an entity type declares that it makes use of an operation, it does this:

          'view' => array(
            'handler' => 'EntityOperationsOperationEntityViewOperations',
            'default' => TRUE,
          ),

This array is called the operation info.

But an operation handler class gets to define essential info about how its operation behaves:

  function operationInfo() {
    return array(
      // Default behaviour is to provide a menu item.
      'provides menu' => TRUE,
      'uses form' => FALSE,
      'provides vbo' => FALSE,
      'provides views field' => TRUE,
    );
  }

this is called... the operation info.

And there are plenty of circumstances where we have both in play :(

This needs cleaning up -- I need to come up with a 2nd name and then use it consistently!