refactored featurs and steps
refactored show view and specs
added feature for restart hangout and steps
added warning text and restart button to show view and specs
added manual update for hangout link
refactored show view and partials
removed outdated features from events
minor refactoring
added a stub for SlackService
removed unnecessary comma from button definition
added a couple of tests for case when hangout has not started for signed in users.  Also, rubymine doesn't like: Time.stub(now: Time.parse('10:30:00')), but I left it alone.
more new tests