RRD graphs are obnoxiously large #55

Update authgui.inc

Added autocapitalize="off" autocorrect="off" to the input for the logon
form usernamefld. When using from an iPhone/iPad the first character
of the username is capitalized automatically.

(legacy) fix notices on IPv6.inc, we should replace this with https://pear.php.net/package/Net_IPv6/download/1.3.0b1 for 16.1 (but there are some other small changes as well there)

While there, make the script run from a secure shell as well.

via: https://forum.opnsense.org/index.php?topic=867.0

One of the benefits of having a stable/15.7 is that we can mop up
after it in master leading up to a clean 16.1.  :)

Keep a symlink on the true file system underneath MFS to keep
pkg(8) operating correctly all the time.