(hot-fix) disable pointer-events on tooltips

Solves button/link hover issue in IE 11.

Author: tkrupers

src/css/angular-tooltips.css

@@ -11,6 +11,7 @@ visibility:hidden;
   border-radius:3px;
   left:-200%;
   top: 0;
+  pointer-events:none;
 }
 ._720kb-tooltip-title{
   color:rgba(255,255,255,0.95);