[FIX] Notifications z-index is lower than dialogs

lp bug: https://launchpad.net/bugs/916352 fixed

bzr revid: fme@openerp.com-20120125092423-jy4wgabvsfgx1sh7

addons/web/static/src/css/base.css

@@ -83,7 +83,7 @@ body { padding: 0; margin: 0; }
     border-bottom-left-radius: 8px;
 }
 .openerp .oe_notification {
-    z-index: 1001;
+    z-index: 1050;
     display: none;
 }
 .openerp .oe_notification * {

addons/web/static/src/js/chrome.js

@@ -17,7 +17,7 @@ openerp.web.Notification =  openerp.web.OldWidget.extend(/** @lends openerp.web.
         this._super.apply(this, arguments);
         this.$element.notify({
             speed: 500,
-            expires: 1500
+            expires: 2500
         });
     },
     notify: function(title, text) {