Bug: Breadcrumb returns empty div when no breadcrumbs

[alana29s]

While setting up Breadcrumbs for law https://github.com/bu-ist/r3-law/pull/114, it was discovered that the breadcrumbs function returns an empty div(element chosen) when there are no breadcrumbs. It would be preferable to return an empty string instead. If that may break something, a new option to return an empty string could be added.

Sample code from r3-law

						$breadcrumb_args = array(
							'glue'            => ' / ',
							'container_tag'   => 'div',
							'container_id'    => '',
							'container_class' => 'bu-banner-breadcrumbs',
							'anchor_class'    => 'crumb',
							'crumb_current'   => false,
							'anchor_current'  => false,
							'echo'            => true,
							'include_hidden'  => true,
						);

						bu_navigation_breadcrumbs( $breadcrumb_args );
					}

[jdub233]

It's an interesting question as to whether removing the empty div would mess up any other existing layouts.

One approach could be to add another arg to the breadcrumbs() function to optionally skip the empty divs. I think that would go here:

bu-navigation/extras/bu-navigation-breadcrumbs.php

Line 3 in 1441645

function bu_navigation_breadcrumbs( $args = '' ) {