PERF: move excerpt to raw, expose i18n to handlebars

app/assets/javascripts/discourse/helpers/i18n_helpers.js

@@ -23,7 +23,7 @@ I18n.toHumanSize = function(number, options) {
   @method i18n
   @for Handlebars
 **/
-Ember.Handlebars.registerHelper('i18n', function(property, options) {
+Handlebars.registerHelper('i18n', function(property, options) {
   // Resolve any properties
   var params = options.hash,
     self = this;

app/assets/javascripts/discourse/lib/ember_compat_handlebars.js

@@ -60,11 +60,7 @@
 
       var id = new Handlebars.AST.IdNode([{ part: 'get' }]);
 
-      if (!mustache.escaped) {
-        mustache.hash = mustache.hash || new Handlebars.AST.HashNode([]);
-        mustache.hash.pairs.push(["unescaped", new Handlebars.AST.StringNode("true")]);
-      }
-      mustache = new Handlebars.AST.MustacheNode([id].concat([mustache.id]), mustache.hash, !mustache.escaped);
+      mustache = new Handlebars.AST.MustacheNode([id].concat([mustache.id]), mustache.hash, mustache.escaped);
     }
 
     return Handlebars.Compiler.prototype.mustache.call(this, mustache);

app/assets/javascripts/discourse/templates/list/topic_excerpt.raw.hbs

@@ -0,0 +1,8 @@
+{{#if topic.hasExcerpt}}
+  <div class="topic-excerpt">
+    {{{topic.excerpt}}}
+    {{#if topic.excerptTruncated}}
+      <a href="{{topic.url}}">{{i18n read_more}}</a>
+    {{/if}}
+  </div>
+{{/if}}

app/assets/javascripts/discourse/templates/list/topic_list_item.hbs

@@ -10,21 +10,14 @@
   {{/if}}
 {{/if}}
 
-<td class='main-link clearfix' {{bind-attr colspan="titleColSpan"}}>
+<td class='main-link clearfix' colspan="{{unbound titleColSpan}}">
   {{topic-status topic=this.model}}
   {{topic-link this}}
   {{#if showTopicPostBadges}}
     {{topic-post-badges unread=unread newPosts=displayNewPosts unseen=unseen url=lastUnreadUrl}}
   {{/if}}
 
-  {{#if hasExcerpt}}
-    <div class="topic-excerpt">
-      {{{excerpt}}}
-      {{#if excerptTruncated}}
-        <a href="{{url}}">{{i18n read_more}}</a>
-      {{/if}}
-    </div>
-  {{/if}}
+  {{raw "list/topic_excerpt" topic=model}}
 </td>
 
 {{raw "list/category_column" hideCategory=hideCategory category=category}}