Make opening tag link in a new tab optional

Signed-off-by: Marek Pikuła <[email protected]>

exampleSite/config.yaml

@@ -385,6 +385,8 @@ params:
       content: "min read"
     scrollprogress:
       enable: true
+    tags:
+      openInNewTab: true
 
   # For translations
   terms:

layouts/_default/single.html

@@ -58,7 +58,9 @@
             <h5>{{ .Site.Params.terms.tags | default "Tags" }}</h5>
             <ul class="tags-ul list-unstyled list-inline">
               {{range .Params.tags}}
-              <li class="list-inline-item"><a href="{{`tags` | absURL}}/{{.| urlize}}" target="_blank">{{.}}</a></li>
+              <li class="list-inline-item"><a href="{{`tags` | absURL}}/{{.| urlize}}"
+                {{ if site.Params.singlePages.tags.openInNewTab | default true }}target="_blank"{{ end }}
+              >{{.}}</a></li>
               {{end}}
             </ul>
           </aside>