adds navbar logo/link to homepage if not on homepage

Author: joelachance

layouts/partials/navbar.html

@@ -8,6 +8,13 @@
 <nav id="nav" class="navbar is-fresh is-transparent no-shadow" role="navigation" aria-label="main navigation">
   <div class="container">
     <div class="navbar-brand">
+      {{ if not .IsHome }}
+        {{- if $navbarLogo}}
+            <a id="navbar-item" class="navbar-item" href="{{ $navbarLogo.link }}">
+                <img src="{{ printf "/images/%s" $navbarLogo.image | relURL }}" alt="Numpy logo. A three-dimensional blue cube with the letter 'N' highlighted in yellow." width="112" height="28" alt="Numpy logo. A three-dimensional blue cube with the letter 'N' highlighted in yellow.">
+            </a>
+        {{- end}}
+      {{ end }}
       {{- if $sidebarVisible }}
       <a id="navbar-item" class="navbar-item is-hidden-desktop is-hidden-tablet">
         <div id="menu-icon-wrapper" class="menu-icon-wrapper" style="visibility: visible;">