ui: folder loading indicator stole focus

show a spinning halfcircle around the +/- instead of
moving the focus to the selected folder in the sidebar,
since that could mess with keyboard scrolling

copyparty/web/browser.css

@@ -1710,6 +1710,18 @@ html.dz .btn {
 	background: var(--btn-1-bg);
 	text-shadow: none;
 }
+#tree ul a.ld::before {
+	font-weight: bold;
+	font-family: sans-serif;
+	display: inline-block;
+	text-align: center;
+	width: 1em;
+	margin: 0 .3em 0 -1.3em;
+	color: var(--fg-max);
+	opacity: 0;
+	content: '◠';
+	animation: .5s linear infinite forwards spin, ease .25s 1 forwards fadein;
+}
 #tree ul a.par {
 	color: var(--fg-max);
 }

copyparty/web/browser.js

@@ -6140,8 +6140,6 @@ function tree_neigh(n) {
 		links[act].click();
 	else
 		treectl.treego.call(links[act]);
-
-	links[act].focus();
 }
 
 
@@ -7246,6 +7244,7 @@ var treectl = (function () {
 		r.reqls(href, true);
 		r.dir_cb = tree_scrollto;
 		thegrid.setvis(true);
+		clmod(this, 'ld', 1);
 	}
 
 	r.reqls = function (url, hpush, back, hydrate) {