add other descriptions

Author: TaKO8Ki

src/librustdoc/html/static/main.js

@@ -2913,7 +2913,7 @@ function defocusSearchBar() {
             ["⏎", "Go to active search result"],
             ["+", "Expand all sections"],
             ["-", "Collapse all sections"],
-            ["esc", "Close the search view"],
+            ["esc", "<p>Close the search view,</p><p>Remove the query parameters from the URL,</p><p>Close the help popup,</p><p>Close the theme list if open,</p><p>Blur the focus from the search input</p>"],
         ].map(function(x) {
             return "<dt>" +
                 x[0].split(" ")

src/librustdoc/html/static/rustdoc.css

@@ -798,7 +798,6 @@ body.blur > :not(#help) {
 	float: left;
 	clear: left;
 	display: block;
-	margin-right: 0.5rem;
 }
 #help > div > span {
 	text-align: center;
@@ -809,7 +808,7 @@ body.blur > :not(#help) {
 	padding-bottom: 4px;
 	margin-bottom: 6px;
 }
-#help dd { margin: 5px 35px; }
+#help dd { margin: 5px 35px 5px 50px; }
 #help .infos { padding-left: 0; }
 #help h1, #help h2 { margin-top: 0; }
 #help > div div {