[MIE-1205] Disable ability to interact with the snippet when the AS service is down

JIRA: https://jira.nationalgeographic.com/browse/MIE-1205
It just seems that we have some overlap between what `active` means and what `disabled` means. In any case, if the snippet is disabled, it should have the inactive styles. But, if every time that the snippet is disabled it is also inactive, then we will need to trigger `@factory.trigger "active", false` from https://github.com/natgeo/modules-activitysnippet/pull/16/files#diff-5a84a1575c63d5e4dace85693cad3f27R60.