Remove nested resources

This is not a priority at the moment and we also can't figure out how to make it work properly.
Remove test arrays in alarm trigger controller

These were just used as a test on Friday 12.7 to make sure that Select2 was working. We don't need them anymore because our alarm trigger is now connected with our expected events.
Fix belongs_to typo in alarm trigger model

We accidentally wrote belongs_to :expected_events which was causing an error. Carsten changed it to belongs_to :expected_event
Attempt to figure out how to import expected event id

We ended up commenting out the line @alarm_triggers = AlarmTrigger.find(params[:expected_event_id]) because it wasn't returning what we wanted. In essence, this commit changes nothing.
Add title input box in alarm triggers form
Add expected_event_id to Select2 drop down menu

Doing this brings in all the input from ExpectedEvents to the Select2 box using the "map" method. An expected event is selected, and the expected_event_id is returned. This is the foreign key in the alarm trigger table.
Connect Select2 with alarm_trigger_expected_event_id

This makes Select2 bring in all the info from expected events.
Add title and expected_event_id to private methods

This requires that the title and the expected_event_id are filled in.