Bring patreon logo inline

static/index.html

@@ -18,8 +18,7 @@
         <li class="navbar-collapse collapse">
             <ul class="nav navbar-nav navbar-right">
                 <li><a href="https://www.patreon.com/mattgodbolt">
-                    <img height="20" width="20"
-                         src="https://s3.amazonaws.com/patreon_public_assets/toolbox/patreon_logo.png">&nbsp;
+                    <img height="20" width="20" src="assets/patreon_logo.png">&nbsp;
                     Become a Patron</a></li>
                 <li class="if-github-enabled">
                     <a href="https://github.com/mattgodbolt/compiler-explorer">