Improved breadcrumbs navigation for object management views.

...wat/blueprints/filters/templates/filters/creatupdate.html

lib/hawat/blueprints/filters/templates/filters/show.html

...hawat/blueprints/groups/templates/groups/creatupdate.html

lib/hawat/blueprints/groups/templates/groups/show.html

...t/blueprints/networks/templates/networks/creatupdate.html

lib/hawat/blueprints/networks/templates/networks/show.html

lib/hawat/blueprints/users/templates/users/creatupdate.html

lib/hawat/blueprints/users/templates/users/show.html