Still doesn't build for SDK5 relics
Revert "httpd: Add missing function for SDK5 devices"

This reverts commit bc91f2fbf24e779457bc3b25fa807d215d00110f.
httpd: always return 0 for 5 GHz channel bw for SDK5 devices - none of our SDK5 devices support that band anyway
Updated documentation
webui: Some ISPs require a FQDN rather than just a hostname in that WAN field, so accept dots as well
traffic monitor: Reverted Asus's 376_1088 changes as it broke trafmon even more, we now use our own fixed code again; added missing non-QTN code in rstats
Merge branch 'master' into DPI