Add the option to open footer links in a new tab (#136)

config/footer.json

@@ -41,7 +41,8 @@
     {
       "title": "Changelog",
       "url": "https://github.com/derpibooru/philomena/commits/master",
-      "bold": true
+      "bold": true,
+      "target": "_blank"
     },
     {
       "title": "FAQs",
@@ -90,7 +91,8 @@
     },
     {
       "title": "Twitter",
-      "url": "https://twitter.com/Derpibooru"
+      "url": "https://twitter.com/Derpibooru",
+      "target": "_blank"
     }
   ]
 }

lib/philomena_web/templates/layout/_footer.html.slime

@@ -5,13 +5,13 @@ footer#footer
     = for column <- footer_data["cols"] do
       .footercol
         h5 = column
-        
+
         = for row <- footer_data[column] do
           = if row["bold"] do
             strong
-              a href=row["url"] = row["title"]
+              a href=row["url"] target=row["target"]||"_self" = row["title"]
           - else
-            a href=row["url"] = row["title"]
+            a href=row["url"] target=row["target"]||"_self" = row["title"]
           br
 
   #serving_info