* Grandstream HT802 Added Offhook Auto-dial variables
* Grandstream HT802 Added Offhook Auto-dial variables
* Grandstream GRP261x Make Configuration Keypad Lock configurable, fix default
* Grandstream Add grandstream_dhcp_time_zone across all templates
* Yealink Added yealink_missed_calllog to control whether missed calls are logged or not
* Grandstream HT802 update variable name to not use dash (which was breaking the template)
Changes to make the templates a bit more consistent while also fixing some typos and creating a new variable for the NAT Update setting.
By default, the account.x.nat.udp_update_enable is set to "3" which means to have the phone periodically send NOTIFY messages. This is not the case though on additional accounts. This makes for inconsistent configs that sometimes cause issues with phones ringing.
This fixes the issue while also giving the ability to use a variable to set it.