fixes #3694: provide override classes for .hide and .pull-right for grid columns

docs/assets/css/bootstrap.css

@@ -532,6 +532,16 @@ a:hover {
   *margin-left: 8.404255319148938%;
 }
 
+[class*="span"].hide,
+.row-fluid [class*="span"].hide {
+  display: none;
+}
+
+[class*="span"].pull-right,
+.row-fluid [class*="span"].pull-right {
+  float: right;
+}
+
 .container {
   margin-right: auto;
   margin-left: auto;

less/grid.less

@@ -7,4 +7,15 @@
 #grid > .core(@gridColumnWidth, @gridGutterWidth);
 
 // Fluid (940px)
-#grid > .fluid(@fluidGridColumnWidth, @fluidGridGutterWidth);
+#grid > .fluid(@fluidGridColumnWidth, @fluidGridGutterWidth);
\ No newline at end of file
+
+// Reset utility classes due to specificity
+[class*="span"].hide,
+.row-fluid [class*="span"].hide {
+  display: none;
+}
+
+[class*="span"].pull-right,
+.row-fluid [class*="span"].pull-right {
+  float: right;
+}