Show caches also if there're no caches for push builds

This commit fixes caches view to show caches also if only PR caches
exist. Previous version checked for pushes only.

app/controllers/caches.coffee

@@ -7,6 +7,10 @@ Controller = Ember.Controller.extend
 
   isDeleting: false
 
+  cachesExist: (->
+    @get('model.pushes.length') || @get('model.pullRequests.length')
+  ).property('model.pushes.length', 'model.pullRequests.length')
+
   actions:
     deleteRepoCache: ->
       return if @get('isDeleting')

app/routes/caches.coffee

@@ -12,11 +12,11 @@ Route = TravisRoute.extend
     repo = @modelFor('repo')
     Ajax.get("/repos/#{repo.get('id')}/caches").then( (data) ->
       caches = {}
-      
+
       data["caches"].forEach (cacheData) ->
         branch = cacheData.branch
         cache = caches[branch]
-          
+
         if cache
           cache.size += cacheData.size
 
@@ -28,7 +28,7 @@ Route = TravisRoute.extend
       pushes = []
       pullRequests = []
 
-      
+
       for branch, cache of caches
         if /PR./.test(branch)
           cache.type = "pull_request"

app/routes/owner.coffee

@@ -10,10 +10,6 @@ Route = TravisRoute.extend
     "#{model.name}"
 
   model: (params) ->
-    owner = {}
-
-    $.get(config.apiEndpoint + "/v3/owner/#{params.owner}?include=user.repositories,organization.repositories,build.commit,repository.active").then( (data) ->
-      data
-    )
+    $.get(config.apiEndpoint + "/v3/owner/#{params.owner}?include=user.repositories,organization.repositories,build.commit,repository.active")
 
 `export default Route`

app/templates/caches.hbs

@@ -1,17 +1,18 @@
-{{#if model.pushes.length}}
-
+{{#if cachesExist}}
   <div class="caches-header">
     <h1 class="caches-title">All caches <small>(<a href="http://docs.travis-ci.com/user/caching/" title="">documentation</a>)</small></h1>
     <a href="#" {{action "deleteRepoCache"}} {{bind-attr class="isDeleting:deleting :delete-repo-caches :button--delete"}}>
       Delete all repository caches
     </a>
   </div>
-  <h2 class="caches-title">Pushes</h2>
-  <ul id="caches" class="caches">
-    {{#each cache in model.pushes }}
-      {{caches-item cache=cache repo=repo caches=model.pushes}}
-    {{/each}}
-  </ul>
+  {{#if model.pushes.length}}
+    <h2 class="caches-title">Pushes</h2>
+    <ul id="caches" class="caches">
+      {{#each cache in model.pushes }}
+        {{caches-item cache=cache repo=repo caches=model.pushes}}
+      {{/each}}
+    </ul>
+  {{/if}}
 
   {{#if model.pullRequests.length}}
     <h2 class="caches-title">Pull Requests</h2>