add webhook recent deliveries

public/less/_base.less

@@ -7,6 +7,19 @@ body {
 img {
 	border-radius: 3px;
 }
+pre {
+	font: 12px Consolas, "Liberation Mono", Menlo, Courier, monospace;
+	&.raw {
+  	padding: 7px 12px;
+    margin: 10px 0;
+    background-color: #f8f8f8;
+    border: 1px solid #ddd;
+    border-radius: 3px;
+    font-size: 13px;
+    line-height: 1.5;
+    overflow: auto;
+	}
+}
 .full.height {
 	padding: 0;
   margin: 0 0 -@footer-margin*2 0;
@@ -121,6 +134,10 @@ img {
 		&.thin {
 			font-weight: normal;
 		}
+
+		&.middle {
+			vertical-align: middle;
+		}
 	}
 
 	.message {