Update lang files from 3.8.0

Author: Travis CI User

version.php

@@ -25,7 +25,7 @@
 
 defined('MOODLE_INTERNAL') || die;
 
-$plugin->version = 2019121900;
+$plugin->version = 2019122000;
 $plugin->requires = 2013111800; // Require Moodle version (2.6).
 $plugin->maturity = MATURITY_STABLE;
 $plugin->release = '3.8.0';    // This should be the latest Mobile app version