UI/UX changes related to tracks

Add confirmed and cfp_active scopes to Track
Render markdown in track's description
Make the views more similar to the proposal/events views
Change the sequence of columns in admin/Tracks#index
Remove the short_name column from the index views
Add button "My Tracks" in the user menu
Fix track count in proposals
Add details of track in admin/Tracks#show
Use tabs to show track details and events

spec/features/tracks_spec.rb

@@ -39,7 +39,7 @@ feature Track do
       within('table#tracks') do
         expect(page.has_content?(track.name)).to be false
         expect(page.has_content?(track.description)).to be false
-        expect(page.assert_selector('tr', count: 1)).to be true
+        expect(page.has_content?('No data available in table')).to eq true
       end
     end
 

spec/models/track_spec.rb

@@ -120,6 +120,46 @@ describe Track do
     end
   end
 
+  describe 'scope' do
+    describe '#confirmed' do
+      before :each do
+        @program = create(:program)
+      end
+
+      context 'includes' do
+        it 'when track is confirmed' do
+          confirmed_track = create(:track, state: 'confirmed', program: @program)
+          expect(@program.tracks.confirmed.include?(confirmed_track)).to eq true
+        end
+      end
+
+      context 'excludes' do
+        %w[new to_accept accepted to_reject rejected canceled withdrawn].each do |state|
+          it "when track is #{state.humanize}" do
+            unconfirmed_track = create(:track, state: state, program: @program)
+            expect(@program.tracks.confirmed.include?(unconfirmed_track)).to eq false
+          end
+        end
+      end
+    end
+
+    describe '#cfp_active' do
+      before :each do
+        @program = create(:program)
+        @cfp_active_track = create(:track, cfp_active: true, program: @program)
+        @non_cfp_active_track = create(:track, cfp_active: false, program: @program)
+      end
+
+      it 'include tracks with the cfp_active flag enabled' do
+        expect(@program.tracks.cfp_active.include?(@cfp_active_track)).to eq true
+      end
+
+      it 'excludes tracks with the cfp_active flag disabled' do
+        expect(@program.tracks.cfp_active.include?(@non_cfp_active_track)).to eq false
+      end
+    end
+  end
+
   describe '#self_organized?' do
     it 'returns true when it has a submitter' do
       expect(self_organized_track.submitter).to be_a User