MAGETWO-34520: [UI] Updates messaging styles.

- QA updates

Author: Oleg Zinoviev

app/code/Magento/AdminNotification/view/adminhtml/templates/system/messages/popup.phtml

@@ -8,7 +8,8 @@
 
 ?>
 <?php /** @var $block \Magento\AdminNotification\Block\System\Messages\UnreadMessagePopup */ ?>
-<div id="system_messages_list" title="<?php echo $block->escapeHtml($block->getPopupTitle()); ?>">
+
+<div id="system_messages_list" class="admin__scope" title="<?php echo $block->escapeHtml($block->getPopupTitle()); ?>">
     <ul class="message-system-list">
         <?php foreach ($block->getUnreadMessages() as $message): ?>
             <li class="message message-warning <?php echo $block->getItemClass($message);?>">
@@ -17,6 +18,7 @@
         <?php endforeach;?>
     </ul>
 </div>
+
 <script>
 require([
     "jquery",

app/code/Magento/AdminNotification/view/adminhtml/web/system/notification.js

@@ -20,7 +20,9 @@ define([
         },
 
         open: function (severity) {
-            var superMethod = $.proxy(this._super, this);
+            var superMethod = $.proxy(this._super, this),
+                listTemplate,
+                fullTemplate;
 
             $.ajax({
                 url: this.options.ajaxUrl,
@@ -36,12 +38,12 @@ define([
                 });
 
                 tmpl = $(tmpl);
+                listTemplate = $('<ul class="message-system-list"></ul>').append(tmpl);
+                fullTemplate = $('<div class="admin__scope"></div>').append(listTemplate);
 
-                this.element.html(
-                    $('<ul />', {
-                        'class': 'message-system-list'
-                    }).append(tmpl)
-                ).trigger('contentUpdated');
+                this.element
+                    .html(fullTemplate)
+                    .trigger('contentUpdated');
 
                 superMethod();
             }, this));

app/design/adminhtml/Magento/backend/web/css/override.less

@@ -1432,7 +1432,7 @@ table.table tbody tr:last-child td {
   content: '\e632';
   font-size: 1.5rem;
   left: 2.2rem;
-  margin-top: -0.9rem;
+  margin-top: -1rem;
 }
 .message-success:before {
   color: #79a22e;

app/design/adminhtml/Magento/backend/web/css/source/_messages.less

@@ -97,7 +97,7 @@
         content: @alert-icon__error__content;
         font-size: @alert-icon__error__font-size;
         left: 2.2rem;
-        margin-top: -.9rem;
+        margin-top: -1rem;
     }
 }
 

app/design/adminhtml/Magento/backend/web/css/styles-old.less

@@ -795,6 +795,7 @@ fieldset.field [class^='fields-group-'] .field .control {
     > input[type="checkbox"],
     > input[type="radio"] {
         width: 16px;
+        padding: 0;
     }
 }
 
@@ -4937,6 +4938,7 @@ table.items-to-invoice tbody tr:hover td {
 .control > [name="product[url_key_create_redirect]"] + .label,
 .control > [name="general[url_key_create_redirect]"] + .label {
     width: auto;
+    padding-top: 8px;
 }
 
 /*