Track related fixes

Make the message in admin/Tracks form more visible by making it bold and
adding links to venue and rooms
Make papertrail track changes for all the track's attributes
Add validation to require presence of description for self-organized
tracks
Add ID column to admin/Tracks#index
Make the cfp inclusion column sortable
Show success/error flash messages after toggling cfp inclusion

spec/controllers/admin/tracks_controller_spec.rb

@@ -228,16 +228,45 @@ describe Admin::TracksController do
       before :each do
         self_organized_track.cfp_active = false
         self_organized_track.save!
-        patch :toggle_cfp_inclusion, conference_id: conference.short_title, id: self_organized_track.short_name
-        self_organized_track.reload
       end
 
-      it 'assigns the correct track' do
-        expect(assigns(:track)).to eq self_organized_track
+      context 'toggles successfully' do
+        before :each do
+          patch :toggle_cfp_inclusion, conference_id: conference.short_title, id: self_organized_track.short_name, format: :js
+          self_organized_track.reload
+        end
+
+        it 'assigns the correct track' do
+          expect(assigns(:track)).to eq self_organized_track
+        end
+
+        it 'shows success message in flash notice' do
+          expect(flash[:notice]).to match('Successfully changed cfp inclusion of My awesome track to true')
+        end
+
+        it 'becomes true' do
+          expect(self_organized_track.cfp_active).to eq true
+        end
       end
 
-      it 'becomes true' do
-        expect(self_organized_track.cfp_active).to eq true
+      context 'save fails' do
+        before :each do
+          allow_any_instance_of(Track).to receive(:save).and_return(false)
+          patch :toggle_cfp_inclusion, conference_id: conference.short_title, id: self_organized_track.short_name, format: :js
+          self_organized_track.reload
+        end
+
+        it 'assigns the correct track' do
+          expect(assigns(:track)).to eq self_organized_track
+        end
+
+        it 'shows error message in flash notice' do
+          expect(flash[:error]).to match('Failed to toggle cfp inclusion of My awesome track to true')
+        end
+
+        it 'stays false' do
+          expect(self_organized_track.cfp_active).to eq false
+        end
       end
     end
 
@@ -245,16 +274,45 @@ describe Admin::TracksController do
       before :each do
         self_organized_track.cfp_active = true
         self_organized_track.save!
-        patch :toggle_cfp_inclusion, conference_id: conference.short_title, id: self_organized_track.short_name
-        self_organized_track.reload
       end
 
-      it 'assigns the correct track' do
-        expect(assigns(:track)).to eq self_organized_track
+      context 'toggles successfully' do
+        before :each do
+          patch :toggle_cfp_inclusion, conference_id: conference.short_title, id: self_organized_track.short_name, format: :js
+          self_organized_track.reload
+        end
+
+        it 'assigns the correct track' do
+          expect(assigns(:track)).to eq self_organized_track
+        end
+
+        it 'shows success message in flash notice' do
+          expect(flash[:notice]).to match('Successfully changed cfp inclusion of My awesome track to false')
+        end
+
+        it 'becomes false' do
+          expect(self_organized_track.cfp_active).to eq false
+        end
       end
 
-      it 'becomes false' do
-        expect(self_organized_track.cfp_active).to eq false
+      context 'save fails' do
+        before :each do
+          allow_any_instance_of(Track).to receive(:save).and_return(false)
+          patch :toggle_cfp_inclusion, conference_id: conference.short_title, id: self_organized_track.short_name, format: :js
+          self_organized_track.reload
+        end
+
+        it 'assigns the correct track' do
+          expect(assigns(:track)).to eq self_organized_track
+        end
+
+        it 'shows error message in flash notice' do
+          expect(flash[:error]).to match('Failed to toggle cfp inclusion of My awesome track to false')
+        end
+
+        it 'stays true' do
+          expect(self_organized_track.cfp_active).to eq true
+        end
       end
     end
   end

spec/models/track_spec.rb

@@ -54,6 +54,7 @@ describe Track do
       end
 
       it { is_expected.to validate_presence_of(:relevance) }
+      it { is_expected.to validate_presence_of(:description) }
     end
 
     context 'when self_organized? returns false' do
@@ -62,6 +63,7 @@ describe Track do
       end
 
       it { is_expected.to_not validate_presence_of(:relevance) }
+      it { is_expected.to_not validate_presence_of(:description) }
     end
 
     describe '#valid_dates' do