fixes #410 - handle tel links (#417) (#419)
fixes #410 - handle tel links (#417) (#419)


mozilla-mobile/focus-ios,justindarc/focus,mozilla/focus,mozilla-mobile/focus,justindarc/focus,justindarc/focus,mozilla-mobile/focus-ios,mozilla-mobile/focus-ios,mozilla-mobile/focus,mozilla/focus,mozilla-mobile/focus,mozilla-mobile/focus,mozilla-mobile/focus-ios,justindarc/focus,mozilla-mobile/focus-ios,mozilla/focus,mozilla/focus,justindarc/focus,mozilla-mobile/focus-ios,justindarc/focus,mozilla-mobile/focus,mozilla-mobile/focus,mozilla/focus