[AC-3200] New Firmware - 5/15/2018

New firmware for the AC-3200

SUS RT-AC3200 Firmware version 3.0.0.4.382.50470
- Improved system stability.
- Fixed XSS vulnerability. Thanks to Yonghui Han of Fortinet's FortiGuard Labs.
- Fixed CVE-2018-8877, CVE-2018-8878, CVE-2018-8879
- Fixed plain text password vulnerability in lighthttpd
- Modified Quick Internet Setup wizard process.
- Main SSID and guest network can hide independently.