Put searchable and suggestions back in

Tests were not happy and I’m not going to dive into it right now.
Benchmarked it and it’s pretty quick, no big deal.

js/id/presets/collection.js

@@ -1,13 +1,7 @@
 iD.presets.Collection = function(collection) {
 
     var maxSearchResults = 50,
-        maxSuggestionResults = 10,
-        searchable = _.filter(collection, function(a) {
-            return a.searchable !== false && a.suggestion !== true;
-        }),
-        suggestions = _.filter(collection, function(a) {
-            return a.suggestion === true;
-        });
+        maxSuggestionResults = 10;
 
     var presets = {
 
@@ -30,6 +24,13 @@ iD.presets.Collection = function(collection) {
 
             value = value.toLowerCase();
 
+            var searchable = _.filter(collection, function(a) {
+                return a.searchable !== false && a.suggestion !== true;
+            }),
+            suggestions = _.filter(collection, function(a) {
+                return a.suggestion === true;
+            });
+
             // matches value to preset.name
             var leading_name = _.filter(searchable, function(a) {
                     return leading(a.name().toLowerCase());