add ability to open status by URL from search (fix #53)

if account lock info was up to date, otherwise re-do the FollowService
with now updated information

production as it's very verbose and not very useful

Fetching atom extracted from FetchRemoteAccountService and FetchRemoteStatusService
into FetchAtomService. Mentions of the constant "http://activityschema.org/collection/public"
skipped as it's not a real URL/user.