Objectbrowser - remove leftover breadcrumbs

It seems that previously when breadcrumbs where removed,
the edit_object view was forgotten (maybe because edit_object
was never migrated to the new template).

Current breadcrumb is kind of pointless anyway, since it is only a few
pixels from the "home" and "configure" buttons, and we dont have an
ability to link specifically to all object types (like servicegroups)

Fixes #414