Fix #312: allow HTML in loadingMessage, consistent with noDataMessage

OnDemandList.js

@@ -98,8 +98,11 @@ return declare([List, _StoreMixin], {
 		}else{
 			this.preload = preload;
 		}
-		var loadingNode = put(preloadNode, "-div.dgrid-loading");
-		put(loadingNode, "div.dgrid-below", this.loadingMessage);
+
+		var loadingNode = put(preloadNode, "-div.dgrid-loading"),
+			innerNode = put(loadingNode, "div.dgrid-below");
+		innerNode.innerHTML = this.loadingMessage;
+
 		// Establish query options, mixing in our own.
 		// (The getter returns a delegated object, so simply using mixin is safe.)
 		options = lang.mixin(this.get("queryOptions"), options, 
@@ -353,8 +356,9 @@ return declare([List, _StoreMixin], {
 
 				adjustHeight(preload);
 				// create a loading node as a placeholder while the data is loaded
-				var loadingNode = put(beforeNode, "-div.dgrid-loading[style=height:" + count * grid.rowHeight + "px]");
-				put(loadingNode, "div.dgrid-" + (below ? "below" : "above"), grid.loadingMessage);
+				var loadingNode = put(beforeNode, "-div.dgrid-loading[style=height:" + count * grid.rowHeight + "px]"),
+					innerNode = put(loadingNode, "div.dgrid-" + (below ? "below" : "above"));
+				innerNode.innerHTML = grid.loadingMessage;
 				loadingNode.count = count;
 				// use the query associated with the preload node to get the next "page"
 				options.query = preload.query;

extensions/Pagination.js

@@ -228,7 +228,8 @@ function(_StoreMixin, declare, lang, Deferred, on, query, string, has, put, i18n
 				grid._rowIdToObject = {};
 				contentNode.innerHTML = "";
 
-				loadingNode = put(contentNode, "div.dgrid-loading", grid.loadingMessage);
+				loadingNode = put(contentNode, "div.dgrid-loading");
+				loadingNode.innerHTML = grid.loadingMessage;
 
 				// set flag to deactivate pagination event handlers until loaded
 				grid._isLoading = true;