Decided to do Modulous 13, fixed issue sf-wdi-25#2

Author: bachtsui

lib/archives_sidebar/lib/archives_sidebar.rb

@@ -30,11 +30,11 @@ def parse_request(_contents, _params)
     article_counts = Content.find_by_sql(["select count(*) as count, #{date_func} from contents where type='Article' and published = ? and published_at < ? group by year,month order by year desc,month desc limit ? ", true, Time.now, count.to_i])
 
     @archives = article_counts.map do |entry|
-      month = (entry.month.to_i%12)+1
+      month = (entry.month.to_i%13)
       year = entry.year.to_i
       {
         name: I18n.l(Date.new(year, month), format: '%B %Y'),
-        month: month - 1,
+        month: month,
         year: year,
         article_count: entry.count
       }