Index: wp-includes/js/media-views.js
===================================================================
--- wp-includes/js/media-views.js	(revision 23009)
+++ wp-includes/js/media-views.js	(working copy)
@@ -1605,7 +1605,7 @@
 					toolbar:    'main-gallery',
 					filterable: 'uploaded',
 					multiple:   'add',
-					editable:   true,
+					editable:   false,
 
 					library:  media.query( _.defaults({
 						type: 'image'
@@ -3676,6 +3676,8 @@
 
 			// If nothing is selected, display nothing.
 			this.$el.toggleClass( 'empty', ! this.collection.length );
+			this.$el.toggleClass( 'one', 1 === this.collection.length );
+
 			this.$('.count').text( this.collection.length + ' ' + l10n.selected );
 		},
 
Index: wp-includes/css/media-views-rtl.css
===================================================================
--- wp-includes/css/media-views-rtl.css	(revision 23009)
+++ wp-includes/css/media-views-rtl.css	(working copy)
@@ -232,6 +232,8 @@
 .media-selection .selection-info a:last-child {
 	border-right: 1px;
 	border-left: 0;
+	margin-left: 8px;
+	margin-right: 0;
 }
 
 .media-selection:after {
Index: wp-includes/css/media-views.css
===================================================================
--- wp-includes/css/media-views.css	(revision 23009)
+++ wp-includes/css/media-views.css	(working copy)
@@ -1133,6 +1133,10 @@
 	display: none;
 }
 
+.media-selection.one .edit-selection {
+	display: none;
+}
+
 .media-selection .count {
 	display: block;
 	padding-top: 12px;
@@ -1160,6 +1164,7 @@
 
 .media-selection .selection-info a:last-child {
 	border-right: 0;
+	margin-right: 0;
 }
 
 .media-selection .selection-info .clear-selection {