Corrections in SchedulesController

- Controler file name pluralized
- Load and authorization fixed and improved
- Consider that save can fail in create action
- Eliminate unnecessary if in update action
- Ability and tests related to the schedules link in the admin sidebar fixed

app/views/admin/schedules/index.html.haml

@@ -28,5 +28,5 @@
 
 .row
   .col-md-12.text-right
-    = link_to 'Add Schedule', admin_conference_schedule_index_path(@conference.short_title),
+    = link_to 'Add Schedule', admin_conference_schedules_path(@conference.short_title),
     method: :post, class: 'btn btn-primary'

app/views/admin/schedules/show.html.haml

@@ -8,8 +8,8 @@
 .row
   .col-md-2
     Selected schedule
-    = check_box_tag @conference.short_title, @schedule_id, (@schedule_id == @selected_schedule_id),
-      method: :put, url: (admin_conference_schedule_path(@conference.short_title, @schedule_id) + '?selected_schedule='),
+    = check_box_tag @conference.short_title, @schedule.id, (@schedule.id == @selected_schedule.try(:id)),
+      method: :put, url: (admin_conference_schedule_path(@conference.short_title, @schedule) + '?selected_schedule='),
       class: 'switch-checkbox', data: { size: 'small',
                                         off_color: 'warning',
                                         on_text: 'Yes',
@@ -32,5 +32,5 @@
 
 :javascript
   $(document).ready( function() {
-    Schedule.initialize("#{admin_conference_event_schedule_index_path(@conference)}", "#{@schedule_id}");
+    Schedule.initialize("#{admin_conference_event_schedule_index_path(@conference)}", "#{@schedule.id}");
   });