OX-HUGO: cventry now at org heading level

Previously a cventry was inside a div and forced a h3 heading. The content
would not me inside the div because on markdown it wouldn't be
rendered. For limitation it is better to drop the div, make the heading
respect the org level and the properties list is just in one UL tag

ox-hugocv.el

@@ -72,21 +72,22 @@ CONTENTS holds the contents of the headline.  INFO is a plist used
 as a communication channel."
   (let ((from-date (org-element-property :FROM headline))
         (to-date (org-element-property :TO headline))
+        (loffset (string-to-number (plist-get info :hugo-level-offset))) ;"" -> 0, "0" -> 0, "1" -> 1, ..
+        (level (org-export-get-relative-level headline info))
         (title (org-export-data (org-element-property :title headline) info))
         (employer (org-element-property :EMPLOYER headline))
         (location (or (org-element-property :LOCATION headline) "")))
-    (format "\n<div class=\"cventry\">
-    <h3>%s</h3>
-    <ul>
+    (format "\n%s
+
+<ul class=\"cventry\">
     <li class=\"fa fa-building\"> %s</li>
     <li class=\"fa fa-map-marker\"> %s</li>
     <li class=\"fa fa-calendar\"> %s</li>
-    <ul>
-</div>
+</ul>
 
 %s
 "
-            title
+            (concat (make-string (+ loffset level) ?#) " " title)
             employer
             location
             (concat (org-hugocv-timestamp-to-shortdate from-date)