Home page improvements (#1940)

* Add feautre group header fragment for homepage.

* Add feature group headers to feature groups.

* Style feature groups.

* Add collapsing/expanding functionality as well as a favorites section.

* Cards are now sorted in the order of update link > favorite > alphabetical on the homepage.

* Decrease space between section title and cards.

* Add filtering buttons and view options to homepage.

* Hide list view button in preparation for release.

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Co-authored-by: FiratUsta <ahmetfiratusta@gmail.com>

src/main/resources/templates/fragments/featureGroupHeader.html

@@ -0,0 +1,6 @@
+<div th:fragment="featureGroupHeader" class="feature-group-header">
+  <h3 class="menu-title" th:text="${groupTitle}"></h3>
+  <span class="material-symbols-rounded header-expand-button">
+    chevron_right
+  </span>
+</div>