[IE8] Fix popover menu borders for IE8

- fixes "New" menu
- fixes file actions menu

apps/files/css/files.css

@@ -574,6 +574,9 @@ a.action > img {
 #fileList .popovermenu {
 	margin-right: 21px;
 }
+.ie8 #fileList .popovermenu {
+	margin-top: -10px;
+}
 
 .ie8 #fileList a.action img,
 #fileList tr:hover a.action,

core/css/apps.css

@@ -308,6 +308,13 @@
 	-o-filter: drop-shadow(0 0 5px rgba(150, 150, 150, 0.75));
 	filter: drop-shadow(0 0 5px rgba(150, 150, 150, 0.75));
 }
+.ie8 .bubble {
+	border: 1px solid #eee;
+	margin-top: 18px;
+}
+.ie8 .bubble:after {
+	display: none;
+}
 /* miraculous border arrow stuff */
 .bubble:after,
 #app-navigation .app-navigation-entry-menu:after {