move potlatch presets to only be generated once, and allow pulling in way_tags in a way via a false primary key

app/models/way.rb

@@ -49,9 +49,10 @@ class Way < ActiveRecord::Base
 
   # Find a way given it's ID, and in a single SQL call also grab its nodes
   #
+  
   # You can't pull in all the tags too unless we put a sequence_id on the way_tags table and have a multipart key
   def self.find_eager(id)
-    way = Way.find(id, :include => {:way_nodes => :node})
+    way = Way.find(id, :include => [:way_tags, {:way_nodes => :node}])
   end
 
   # Find a way given it's ID, and in a single SQL call also grab its nodes and tags

app/models/way_node.rb

@@ -3,4 +3,6 @@ class WayNode < ActiveRecord::Base
 
   set_primary_keys :id, :sequence_id
   belongs_to :node
+
+  belongs_to :way, :foreign_key => :id
 end

app/models/way_tag.rb

@@ -1,5 +1,8 @@
 class WayTag < ActiveRecord::Base
   set_table_name 'current_way_tags'
 
+  # false multipart key
+  set_primary_keys :id, :k, :v
+
   belongs_to :way, :foreign_key => 'id'
 end