Do not start radvd when dhcp6c is stopping
Do not restart radvd if it is already running
Don't make the led_control() call for the RT-AC68U LED_5G re-apply led behaviour to the controler, as it causes erratic blinking behaviour - the watchdog periodically calls led_control() to make the 5G LED blink through software.

Now we only write to gpio on a led_control(LED_5G, state) call, and have a separate constant called LED_5G_FORCED which will actually setup the led behaviour register.

Made Stealth Mode use the new constant.
Updated documentation
Missing from previous commit
Merge branch 'master' of github.com:RMerl/asuswrt-merlin
Properly re-enable all LEDs when coming out of Stealth Mode with an RT-AC56
Updated documentation
Merge pull request #616 from pinwing/radvd

Do not restart radvd if it is already running
Merge pull request #615 from pinwing/dhcp6c

Do not start radvd when dhcp6c is stopping
rstats: Initialize a few vars to ensure we don't end up working with random values
Bumped revision to alpha 3
ovpn: Start OpenVPN instances regardless of the client setup (revert change from GPL 5656 that doesn't suit our implementation)
webui: Improved feedback when the VPN server failed to start or isn't running; only wait 5 secs instead of 20, as it should be enough to switch to Initializing stage
Those typos were starting to bother me
webui: Reduced workgroup max length to 16 chars, resized field to match the name field above
email: Added .gitignore
Bumped revision
Update missed in previous GPL merge
Updated documentation