add logic "if" and modify logic "loop" on fn_tpl.php
fn_tpl: do not remove texts inside { }
remove block inside "loop" and "if"
MAJOR: implement templates on themes, change how menu.php works
MAJOR: themes default implement template
tpl name inside $tpl
upgrade themes play to use new template system
display menu on themes play only when valid()
implement enable forgot and register
update CHANGELOG
add new doc TEMPLATE