Update lang files from 3.9.1

Author: Travis CI User

version.php

@@ -25,8 +25,8 @@
 
 defined('MOODLE_INTERNAL') || die;
 
-$plugin->version = 2020062600;
+$plugin->version = 2020070200;
 $plugin->requires = 2013111800; // Require Moodle version (2.6).
 $plugin->maturity = MATURITY_STABLE;
-$plugin->release = '3.9.0';    // This should be the latest Mobile app version
+$plugin->release = '3.9.1';    // This should be the latest Mobile app version
 $plugin->component = 'local_moodlemobileapp';