Add support for 'scroll up refresh' in the gallery.

src/scss/message.scss

@@ -24,10 +24,13 @@ div.message {
   justify-content: center;
   align-items: center;
   box-sizing: border-box;
-  padding: 20px;
   height: 100%;
 }
 
+div.message.padded {
+  padding: 20px;
+}
+
 div.message div.contents {
   display: flex;
   flex-direction: column;
@@ -55,7 +58,3 @@ div.message div.icon {
   white-space: pre-wrap;
   word-break: break-all;
 }
-
-.message ha-icon, ha-circular-progress {
-  padding: 10px;
-}