Switched tooltips implementation to modified Bootstrap script

css/mixins.less

@@ -6,4 +6,11 @@
 .box-shadow(@shadow) {
 	-webkit-box-shadow: @shadow; // iOS <4.3 & Android <4.1
 	box-shadow: @shadow;
+}
+
+.opacity(@opacity) {
+  opacity: @opacity;
+  // IE8 filter
+  @opacity-ie: (@opacity * 100);
+  filter: ~"alpha(opacity=@{opacity-ie})";
 }