Support for crumbs module

[rujiali]

Drupal crumbs module is included in SaaS as the only option for the custom breadcrumb.

Proposed solution: Add code from crumbs_theme_breadcrumb() function into theme_breadcrumb function to apply the UI KIT layout.

[Feng-Shui]

Should this be something that's covered off in a govCMS specific implementation of the base theme?

[rujiali]

I think this should be covered in the base theme similar to the TOC module as this is the only module we can use regarding breadcrumb in SaaS. I would treat this module as one of the core module in SaaS that would be used frequently. Currently when user enable this module, the UI KIT style will be gone. We are overriding the style in our sub theme, but I think this should be included in the base. @Feng-Shui