Jump to personals tab on prepare_personal

(imported from commit 5f3fbc7a84a0af6742ceb1f1ab8806234870445f)

templates/zephyr/index.html

@@ -36,7 +36,7 @@
 <hr />
 
 <div class="tabbable container">
-    <ul class="nav nav-tabs">
+    <ul class="nav nav-tabs" id="zephyr-type-tabs">
         <li class="active"><a href="#class-message" data-toggle="tab">Class message</a></li>
         <li><a href="#personal-message" data-toggle="tab">Personal message</a></li>
     </ul>

zephyr/static/js/zephyr.js

@@ -118,6 +118,7 @@ function narrow_instance(class_name, instance, target_zephyr) {
 }
 
 function prepare_personal(username) {
+    $('#zephyr-type-tabs a[href="#personal-message"]').tab('show');
     $("#recipient").val(username);
     $("#new_personal_zephyr").focus();
 }