Switching author metadata to use upcoming Hugo changes

- there is a Hugo PR adding full support for author metadata:
- gohugoio/hugo#1850
- updating hasper to be in line with these new properties

config-example.yaml

@@ -44,16 +44,17 @@ params:
 # authors config. use this section to provide full meta-data about the authors on your site
 author:
   dennis:
+    id: "dennis"                            # author's id/short name
     firstName: "Dennis"                     # author's first name
     lastName: "Coldwell"                    # author's last name
     displayName: "dennis"                   # author's prefered display name
     location: "Berkeley, CA"                # author's whereabouts
     bio: "trying to leave things better than I found them."  # short bio, appears below author details on post
     thumbnail: "/img/avatar.jpg"            # author's avatar
   mikasa:
+    id: "mikasa"
     firstName: "Mikasa"
     lastName: "Ackerman"
-    displayName: "mikasa"
     location: "Shiganshina"
     bio: "Better try something than to simply wait for death."
     thumbnail: "/img/mikasa.jpg"

layouts/partials/post_meta.html

@@ -14,8 +14,8 @@
       <img class="author-thumb" src="{{.}}" alt="Author image" nopin="nopin" />
     {{end}}
 
-    {{/* print the display name from the details */}}
-    {{$authorDetail.displayName}}
+    {{/* print the shortname (id) from the details */}}
+    {{$authorDetail.id}}
   {{else}}
     {{/* if no author details are set, just print whatever is set on the $author field */}}
     {{$author}}