pools: remove pool list dropdown from add to pool dialog.

Autocomplete works better than trying to select the pool from a gigantic
dropdown.

app/controllers/pool_elements_controller.rb

@@ -19,10 +19,4 @@ class PoolElementsController < ApplicationController
     @pool.remove!(@post)
     respond_with(@pool, :location => post_path(@post))
   end
-
-  def all_select
-    @pools = Pool.undeleted.order("name").select("id, name")
-    @pools.each # hack to force rails to eager load
-    @pools
-  end
 end

app/views/pool_elements/_new.html.erb

@@ -4,7 +4,6 @@
   <div class="input">
     <label>Pool Name</label>
     <span id="pool-name-container"><%= text_field_tag "pool_name", "", :size => 20, :data => { autocomplete: "pool" } %></span>
-    <span id="pool-name-hint" class="hint">Search for a pool containing (<%= link_to "see full list", all_select_pool_element_path, :remote => true %>)</span>
   </div>
 
   <div class="input">

app/views/pool_elements/all_select.js.erb

@@ -1,2 +0,0 @@
-$("#pool-name-container").html(<%= raw select_tag("pool_id", options_for_select(@pools.map {|x| [x.name, x.id]})).to_json %>);
-$("#pool-name-hint").hide();

config/routes.rb

@@ -182,11 +182,7 @@ Rails.application.routes.draw do
     end
     resource :order, :only => [:edit], :controller => "pool_orders"
   end
-  resource :pool_element, :only => [:create, :destroy] do
-    collection do
-      get :all_select
-    end
-  end
+  resource :pool_element, :only => [:create, :destroy]
   resources :pool_versions, :only => [:index] do
     member do
       get :diff