Add alarm_notifications.remote_side_id column
AlarmNotification belongs_to :remote_side
RemoteSide has_many :alarm_notifications
Add inverse_of and nullifys for consistency
Track the remote side upon #alarm!
Extract creation of alarm_notification
Check for matching remote_side in Matcher.expected_events
Eager load alarm notifications
Create helper predicate
Collapse multi-line block
Merge branch 'fix/add-remote-side-id-to-alarm-notification'