Display caches link only to logged in users

app/templates/repos/show/tools.hbs

@@ -10,7 +10,7 @@
     <li>
       {{#link-to "requests" view.repo}}Requests{{/link-to}}
     </li>
-    {{#if config.endpoints.caches}}
+    {{#if view.displayCachesLink}}
       <li>
         {{#link-to "caches" view.repo}}Caches{{/link-to}}
       </li>

app/views/repo-show-tools.coffee

@@ -1,5 +1,6 @@
 `import Ember from 'ember'`
 `import BasicView from 'travis/views/basic'`
+`import config from 'travis/config/environment'`
 
 View = BasicView.extend
   templateName: 'repos/show/tools'
@@ -72,6 +73,10 @@ View = BasicView.extend
     @get('hasPushPermission')
   ).property('hasPushPermission')
 
+  displayCachesLink: (->
+    @get('hasPushPermission') && config.endpoints.caches
+  ).property('hasPushPermission')
+
   displayStatusImages: (->
     @get('hasPermission')
   ).property('hasPermission')