Toggle bump buttona via JS

server/templates/category_entry.hbs

@@ -5,16 +5,19 @@
 			></div>
 		<span class="category_name">{{this.category.name}}</span>
 		<div class="category_button_container">
-			{{#if this.category.started}}
 			<form
 				action="/category/{{@key}}/bump_session/minutes/5"
 				id="bump-form-{{@key}}"
 				method="post"></form>
 			<button
+				{{#if this.category.started}}
 				class="category_bump_button"
+				{{else}}
+				class="category_bump_button display_none"
+				{{/if}}
+				id="bump-button-{{@key}}"
 				form="bump-form-{{@key}}"
 				type="submit">+5m</button>
-			{{/if}}
 			<!-- without this extra tag, every even noscript tag seems to not trigger -->
 			<!-- what is even happening help -->
 			<noscript></noscript>