Docs: minor layout tweaks

docs/_template.html

@@ -110,8 +110,8 @@
     <div class="container">
         <div class="masthead">
             <h3 class="muted">
-                <a href="https://www.mathdotnet.com">Math.NET Project</a> | 
                 <a href="https://numerics.mathdotnet.com">Math.NET Numerics</a> | 
+                <a href="https://www.mathdotnet.com">Math.NET Project</a> | 
                 <a href="https://github.com/mathnet/mathnet-numerics">GitHub</a>
             </h3>
         </div>

docs/content/fsdocs-custom.css

@@ -0,0 +1,16 @@
+.navbar-nav .nav-link {
+    padding-top: 0.1rem;
+    padding-bottom: 0.1rem;
+}
+
+#fsdocs-content li {
+    margin: 0px 0px 10px 0px;
+}
+
+.masthead h3 {
+    margin-top: 15px;
+    margin-bottom: 5px;
+    font-size: 130%;
+    text-align: right;
+    color: #999999;
+}