adjust layout for /admin/app

lib/views/admin/app.html

@@ -53,16 +53,20 @@
 
         <div class="form-group">
           <div class="col-xs-offset-3 col-xs-6">
-            <input type="checkbox" name="settingForm[app:fileUpload]" value="1"
-              {% if settingForm['app:fileUpload'] %}
-              checked
-              {% endif %}
-              {% if not isUploadable() %}
-              disabled="disabled"
-              {% else %}
-              {% endif %}
-              >
-              <label for="settingForm[app:fileUpload]" class="">{{ t("app_setting.enable_files_except_image") }}</label>
+            <div class="checkbox checkbox-info">
+              <input type="checkbox" id="cbFileUpload" name="settingForm[app:fileUpload]" value="1"
+                {% if settingForm['app:fileUpload'] %}
+                checked
+                {% endif %}
+                {% if not isUploadable() %}
+                disabled="disabled"
+                {% else %}
+                {% endif %}
+                >
+              <label for="cbFileUpload">
+                {{ t("app_setting.enable_files_except_image") }}
+              </label>
+            </div>
 
               <p class="help-block">
                 {{ t("app_setting.enable_files_except_image") }}<br>