Add basic deadline to sections index

app/javascript/application.js

@@ -5,6 +5,7 @@ import initPoliticianQuestions from './politicians_answer.js'
 import initAcrosticQuestions from './acrostic_answer.js'
 import initConnectionsQuestions from './connections_answer.js'
 import initLyricsQuestions from './lyrics_answer.js'
+import initDeadlineDisplay from './deadline_display.js'
 
 import { Sortable, Swap } from 'sortablejs'
 
@@ -17,4 +18,5 @@ addEventListener("DOMContentLoaded", () => {
     initAcrosticQuestions()
     initConnectionsQuestions()
     initLyricsQuestions()
+    initDeadlineDisplay()
 })