Set activity prefs for first admin; make all admin activity prefs default to email

htdocs/lib/activity.php

@@ -162,13 +162,21 @@ function activity_set_defaults($eventdata) {
 
 function activity_add_admin_defaults($userids) {
     $activitytypes = get_records_array('activity_type', 'admin', 1);
+    $haveemail = in_array('email', array_map(create_function('$a', 'return $a->name;'),
+                                             plugins_installed('notification')));
+    if ($haveemail) {
+        $method = 'email';
+    }
+    else {
+        $method = 'internal';
+    }
     foreach ($activitytypes as $type) {
         foreach ($userids as $id) {
             if (!record_exists('usr_activity_preference', 'usr', $id, 'activity', $type->id)) {
                 insert_record('usr_activity_preference', (object)array(
                     'usr' => $id,
                     'activity' => $type->id,
-                    'method' => 'internal',
+                    'method' => $method,
                 ));
             }
         }

htdocs/lib/upgrade.php

@@ -606,6 +606,7 @@ function core_install_lastcoredata_defaults() {
     set_profile_field($user->id, 'lastname', $user->lastname);
     set_config('installed', true);
     handle_event('createuser', $user->id);
+    activity_add_admin_defaults(array($user->id));
     db_commit();
 
     // if we're installing, set up the block categories here and then poll the plugins.