Fix #520: Only display single page number when there is 1 page of res…

…ults

Also suppress pagingTextBox in this case, since there's only one valid page

extensions/Pagination.js

@@ -196,7 +196,7 @@ function(_StoreMixin, declare, lang, Deferred, on, query, string, has, put, i18n
 
 			function pageLink(page){
 				var link;
-				if(grid.pagingTextBox && page == currentPage){
+				if(grid.pagingTextBox && page == currentPage && end > 1){
 					// use a paging text box if enabled instead of just a number
 					link = put(linksNode, 'input.dgrid-page-input[type=text][value=$]', currentPage);
 					link.setAttribute("aria-label", i18n.jumpPage);
@@ -247,7 +247,9 @@ function(_StoreMixin, declare, lang, Deferred, on, query, string, has, put, i18n
 					put(linksNode, "span.dgrid-page-skip", "...");
 				}
 				// last link
-				pageLink(end);
+				if(end > 1){
+					pageLink(end);
+				}
 			}else if(grid.pagingTextBox){
 				// The pageLink function is also used to create the paging textbox.
 				pageLink(currentPage);