Added functionality to disable Page Template field when Forum or Channel embed is selected.
Added functionality to disable Page Template field when Forum or Channel embed is selected.

Fixes: https://trello.com/c/HZalZoLd
Signed-off-by: Paul Hughes <a027184a55211cd23e3f3094f1fdc728df5e0500@paulalexanderhughes.com>

muut/wordpress-plugin,muut/wordpress-plugin,ishan576/wordpress-plugin,ishan576/wordpress-plugin