Add noter:<any|none> metatags.

app/logical/post_query_builder.rb

@@ -245,7 +245,13 @@ class PostQueryBuilder
 
     if q[:noter_ids]
       q[:noter_ids].each do |noter_id|
-        relation = relation.where("posts.id IN (?)", Note.unscoped.where("creator_id = ?", noter_id).select("post_id").uniq)
+        if noter_id == "any"
+          relation = relation.where("posts.last_noted_at is not null")
+        elsif noter_id == "none"
+          relation = relation.where("posts.last_noted_at is null")
+        else
+          relation = relation.where("posts.id": Note.unscoped.where(creator_id: noter_id).select("post_id").distinct)
+        end
       end
       has_constraints!
     end

app/models/tag.rb

@@ -448,8 +448,15 @@ class Tag < ActiveRecord::Base
 
           when "noter"
             q[:noter_ids] ||= []
-            user_id = User.name_to_id($2)
-            q[:noter_ids] << user_id unless user_id.blank?
+
+            if $2 == "none"
+              q[:noter_ids] << "none"
+            elsif $2 == "any"
+              q[:noter_ids] << "any"
+            else
+              user_id = User.name_to_id($2)
+              q[:noter_ids] << user_id unless user_id.blank?
+            end
 
           when "noteupdater"
             q[:note_updater_ids] ||= []