/post_versions, /artist_versions: fix missing spaces between tags/names.

app/helpers/artist_versions_helper.rb

@@ -13,6 +13,7 @@ module ArtistVersionsHelper
     end
     diff[:unchanged_names].each do |name|
       html << '<span>' + h(name) + '</span>'
+      html << " "
     end
 
     html << "</span>"

app/helpers/post_versions_helper.rb

@@ -13,6 +13,7 @@ module PostVersionsHelper
     end
     diff[:unchanged_tags].each do |tag|
       html << '<span>' + link_to(wordbreakify(tag), posts_path(:tags => tag)) + '</span>'
+      html << " "
     end
 
     html << "</span>"