Code cleanup (#660)

* Remove trailing whitespace

* Clean up donate page

* Format index and remove unnecessary breaklines

* Fix p element being child of ul error

* Fix empty h1 error

* Losslessly compress mailbox, mastodon and bitwarden images

_layouts/default.html

@@ -183,8 +183,7 @@
 </nav>
 <!-- navigation ends here -->
 
-<div class="py-4">
-<h1 id="top"></h1>
+<div id="top" class="py-4">
 <div class="mb-5"></div>
 {{ content }}
 </div>