Fixed compose box PM recipient typeahead handling of focus.

This closes #2315.

static/third/bootstrap/js/bootstrap.js

@@ -1843,10 +1843,10 @@
 
     constructor: Typeahead
 
-  , select: function () {
+  , select: function (e) {
       var val = this.$menu.find('.active').data('typeahead-value')
       this.$element
-        .val(this.updater(val))
+        .val(this.updater(val, e))
         .change()
       return this.hide()
     }
@@ -2067,7 +2067,7 @@
         case 9: // tab
         case 13: // enter
           if (!this.shown) return
-          this.select()
+          this.select(e)
           break
 
         case 27: // escape
@@ -2098,7 +2098,7 @@
   , click: function (e) {
       e.stopPropagation()
       e.preventDefault()
-      this.select()
+      this.select(e)
     }
 
   , mouseenter: function (e) {