Avoid blank screen bug, when triggered by very large comments.

services/web/public/stylesheets/app/editor/review-panel.less

@@ -158,6 +158,8 @@
 		position: absolute;
 		top: 0;
 		bottom: 0;
+		padding-bottom: 52px;
+		overflow: hidden;
 	}
 	
 	.rp-state-overview & {