add bio to author view

app/views/post/author/view.pug

@@ -15,12 +15,13 @@ block content
         div(class="uk-grid").uk-grid
           div(class="uk-width-1-1 uk-width-1-4@m uk-first-column")
             +renderUserIcon(author, author.displayName || author.username, 'large')
-            .uk-margin
-              .uk-card.uk-card-default.uk-card-small
-                .uk-card-header.uk-text-center
-                  h1.uk-card-title Bio
-                div(class="uk-card uk-card-default uk-card-body")
-                  p= author.bio
+            if author.bio
+              .uk-margin
+                .uk-card.uk-card-default.uk-card-small
+                  .uk-card-header.uk-text-center
+                    h1.uk-card-title Bio
+                  .uk-card-body
+                    p.uk-flex-wrap= author.bio
 
           div(class="uk-width-1-1 uk-width-expand@m")
             div.uk-container