Fix adding and deleting of systemglobalauthenticationtacacspolicybinding resources.
Allow deleting of resources like systemglobal_authenticationtacacspolicy_binding which
require the DELETE request to be sent to the resource type URL with argument the resource name,
instead of the resource_type/resource_name URL that's used by default
Better checks
Merge pull request #39 from ndenev/master

Fix adding and deleting of systemglobal_authenticationtacacspolicy_binding resources.