update bootstrap from 3.3.5 to 3.3.6

bower.json

@@ -26,7 +26,7 @@
     "snapjs": "~2.0.0-rc1",
     "strengthify": "0.4.2",
     "underscore": "~1.8.0",
-    "bootstrap": "~3.3.5",
+    "bootstrap": "~3.3.6",
     "backbone": "~1.2.3",
     "davclient.js": "https://github.com/evert/davclient.js.git",
     "es6-promise": "https://github.com/jakearchibald/es6-promise.git#~2.3.0"

core/vendor/bootstrap/js/tooltip.js

@@ -1,5 +1,5 @@
 /* ========================================================================
- * Bootstrap: tooltip.js v3.3.5
+ * Bootstrap: tooltip.js v3.3.6
  * http://getbootstrap.com/javascript/#tooltip
  * Inspired by the original jQuery.tipsy by Jason Frame
  * ========================================================================
@@ -26,7 +26,7 @@
     this.init('tooltip', element, options)
   }
 
-  Tooltip.VERSION  = '3.3.5'
+  Tooltip.VERSION  = '3.3.6'
 
   Tooltip.TRANSITION_DURATION = 150