Implement viewer() and members(project) typeahead functions

Summary:
Ref T4100. This is still a bit rough around the edges, but mostly does what we're after.

  - Implements viewer() and members(...) functions.
  - The new browse workflow makes these discoverable.

Test Plan: {F374201}

Reviewers: btrahan

Reviewed By: btrahan

Subscribers: chad, epriestley

Maniphest Tasks: T4100

Differential Revision: https://secure.phabricator.com/D12444

webroot/rsrc/externals/javelin/lib/control/typeahead/normalizer/TypeaheadNormalizer.js

@@ -14,10 +14,14 @@ JX.install('TypeaheadNormalizer', {
      * @return string Normalized string.
      */
     normalize : function(str) {
+
+      // NOTE: We specifically normalize "(" and ")" into spaces so that
+      // we can match tokenizer functions like "members(project)".
+
       return ('' + str)
         .toLocaleLowerCase()
-        .replace(/[\.,\/#!$%\^&\*;:{}=_`~()]/g, '')
-        .replace(/[-\[\]]/g, ' ')
+        .replace(/[\.,\/#!$%\^&\*;:{}=_`~]/g, '')
+        .replace(/[-\[\]\(\)]/g, ' ')
         .replace(/ +/g, ' ')
         .replace(/^\s*|\s*$/g, '');
     }

webroot/rsrc/js/application/typeahead/behavior-typeahead-search.js

@@ -10,6 +10,7 @@ JX.behavior('typeahead-search', function(config) {
   var input = JX.$(config.inputID);
   var frame = JX.$(config.frameID);
   var last = input.value;
+  var in_flight = {};
 
   function update() {
     if (input.value == last) {
@@ -30,9 +31,17 @@ JX.behavior('typeahead-search', function(config) {
       return;
     }
 
+    if (value in in_flight) {
+      // We've already sent a request for this query.
+      return;
+    }
+    in_flight[value] = true;
+
     JX.DOM.alterClass(frame, 'loading', true);
     new JX.Workflow(config.uri, {q: value, format: 'html'})
       .setHandler(function(r) {
+        delete in_flight[value];
+
         if (value != input.value) {
           // The user typed some more stuff while the request was in flight,
           // so ignore the response.

webroot/rsrc/js/core/Prefab.js

@@ -287,7 +287,8 @@ JX.install('Prefab', {
         icon: icon,
         closed: closed,
         type: fields[5],
-        sprite: fields[10]
+        sprite: fields[10],
+        unique: fields[11] || false
       };
     },