hide tooltips and popovers when a user clicks away

hide triggers when a click occurs that does not target the
popover/tooltip link and does not target elements with the
popover/tooltip classes

src/tooltip/tooltip.js

@@ -400,7 +400,16 @@ angular.module('ui.bootstrap.tooltip', ['ui.bootstrap.position', 'ui.bootstrap.s
               ttScope.popupDelay = !isNaN(delay) ? delay : options.popupDelay;
             }
 
+            // hide tooltips/popovers when click away
+            function bodyHideTooltipBind(e) {
+              var target_elem = angular.element(e.target);
+              if (e.target != element[0] && !target_elem.hasClass('popover') && !target_elem.hasClass('popover-inner') && !target_elem.hasClass('popover-title') && !target_elem.hasClass('popover-content') && !target_elem.hasClass('tooltip') && !target_elem.hasClass('tooltip-inner')) {
+                hideTooltipBind();
+              }
+            }
+
             var unregisterTriggers = function() {
+              angular.element(document.getElementsByTagName('body')[0]).unbind('click', bodyHideTooltipBind);
               triggers.show.forEach(function(trigger) {
                 element.unbind(trigger, showTooltipBind);
               });
@@ -417,6 +426,7 @@ angular.module('ui.bootstrap.tooltip', ['ui.bootstrap.position', 'ui.bootstrap.s
 
               triggers = getTriggers(val);
 
+              document.getElementsByTagName('body')[0].addEventListener('click', bodyHideTooltipBind);
               if (triggers.show !== 'none') {
                 triggers.show.forEach(function(trigger, idx) {
                   // Using raw addEventListener due to jqLite/jQuery bug - #4060