change counts

app/views/repositories/top_counts.json.jbuilder

@@ -0,0 +1,7 @@
+json.tags_count @tags_count
+json.branches_count @branches_count
+json.commits_count @commits_count
+json.version_releasesed_count @project.releases_size(current_user.try(:id), "released")  #已发行的版本
+if @result 
+  json.size replace_bytes_to_b(number_to_human_size(@result['size'].to_i*1024))
+end