More specific CSS selector for the 'processing upload data' overlay.

To avoid having the 'Processing upload data' text show up on any other spinner overlays that happen to be on the page (i.e. the trace ending indicator)

Author: dylemma

codepulse/src/main/resources/toserve/pages/traces/traces.css

@@ -2,15 +2,15 @@ body {
 	background: #6D6D6D;
 }
 
-body .overlay {
+body > .overlay {
 	/* The waiting overlay for when the trace is loading data.
 	 * It needs to be in front of the other fixed-position things,
 	 * but behind the header and footer.
 	 */
 	z-index: 2;
 }
 
-body .overlay:before {
+body > .overlay:before {
 	content: 'Processing upload data...';
 	position: absolute;
 	top: calc(50% - 50px);