Feat: Add button for adding new proposal

app/templates/pages/projects.html

@@ -17,7 +17,11 @@
                         </li>
                     {% endfor %}
                 </ul>
-            </div>
+            </section>
+            <section class="w3-section">
+
+                <a href="#" class="w3-btn w3-teal">Add new proposal</a>
+            </section>
         </div>
     </div>