Show more than 5 entries in the upload table

customize.dist/src/less2/include/fileupload.less

@@ -17,6 +17,8 @@
         z-index: 1000000; //Z file upload table container
         display: none;
         color: darken(@colortheme_drive-bg, 10%);
+        max-height: 180px;
+        overflow-y: auto;
 
         @media screen and (max-width: @browser_media-medium-screen) {
             left: 5vw; right: 5vw; bottom: 5vw;
@@ -26,6 +28,9 @@
             display: flex;
             background-color: darken(@colortheme_modal-bg, 10%);
             font-weight: bold;
+            position: sticky;
+            top: 0;
+            z-index: 1;
             .cp-fileupload-header-title {
                 padding: 0.25em 0.5em;
                 flex-grow: 1;