Add SIGSOFT50 story page

* Add SIGSOFT50 story page

* Refine SIGSOFT50 story page

* Polish SIGSOFT50 page copy

* Fix SIGSOFT50 PR preview asset paths

Author: yqtian-se

config.toml

@@ -59,6 +59,12 @@ pluralizelisttitles = false
     weight     = 6
     parent     = "menu.abt"
 
+[[menu.main]]
+    name       = "SIGSOFT50"
+    url        = "/sigsoft50"
+    weight     = 7
+    parent     = "menu.abt"
+
 
 
 [[menu.main]]

content/sigsoft50.html

@@ -18,6 +18,8 @@
 
         {{ partial "features.html" . }}
 
+        {{ partial "sigsoft50_highlight.html" . }}
+      
         {{ partial "academy_highlight.html" . }}
 
         {{ partial "testimonials.html" . }}

layouts/index.html

@@ -0,0 +1,23 @@
+<section class="bar background-white sigsoft50-highlight">
+  <div class="container">
+    <div class="row sigsoft50-highlight__row">
+      <div class="col-md-7">
+        <p class="sigsoft50-highlight__eyebrow">50th Anniversary</p>
+        <h2>SIGSOFT50</h2>
+        <p class="lead">
+          A story of people, institutions, memory, and renewal from the ACM SIGSOFT 50th Anniversary Celebration.
+        </p>
+        <p>
+          <a href="sigsoft50/" class="btn btn-template-main">
+            Explore the Celebration
+          </a>
+        </p>
+      </div>
+      <div class="col-md-5">
+        <a href="sigsoft50/" class="sigsoft50-highlight__image" aria-label="Explore the SIGSOFT50 anniversary celebration">
+          <img src="sigsoft50/slides/slide-02.jpg" alt="SIGSOFT50 anniversary celebration opening slide">
+        </a>
+      </div>
+    </div>
+  </div>
+</section>