Move ga account setting to new ga setting page

Author: edokeh

app/assets/javascripts/admin/setting/template/website.html

@@ -24,18 +24,6 @@
                                 <textarea class="form-control" rows="4" ng-model="website.sub_title"></textarea>
                             </div>
                         </div>
-                        <div class="form-group">
-                            <label class="col-md-1 control-label">GA Account</label>
-
-                            <div class="col-md-5">
-                                <input type="text" class="form-control" ng-model="website.ga"/>
-                                <span class="help-block">填写以开启
-                                    <a href="https://developers.google.com/analytics/resources/concepts/gaConceptsAccounts"
-                                       target="_blank">Google
-                                        Analytics</a> 统计（如 UA-XXXX-Y）
-                                </span>
-                            </div>
-                        </div>
                     </fieldset>
                     <fieldset>
                         <legend>作者</legend>

app/views/layouts/_ga.html.erb

@@ -1,8 +1,8 @@
-<% if Setting.website.ga and !@preview %>
+<% if Setting.ga.account and !@preview %>
     <% if ga == :head %>
         <script>
             var _gaq = _gaq || [];
-            _gaq.push(['_setAccount', '<%= Setting.website.ga %>']);
+            _gaq.push(['_setAccount', '<%= Setting.ga.account %>']);
             (function() {
                 var ga = document.createElement('script');
                 ga.type = 'text/javascript';