Sort case studies by pubdate

Signed-off-by: Christopher Guindon chris.guindon@eclipse-foundation.org

layouts/section/case-studies.html

@@ -42,7 +42,7 @@
<section class="first">
<div class="container">
<div class="row">
-        {{ range where .Site.RegularPages.ByWeight "Section" "case-studies" }} 
+        {{ range where (.Site.RegularPages.ByPublishDate).Reverse "Section" "case-studies" }} 
<div class="col-md-6" style="min-height: 350px;">
<div class="row">
<div class="col-md-12">