Move .htaccess (deny from all) to $app/var
Move $app/data to $app/var/data. 

* yatt.command setup works again for current dir.
Auto db setup for samples/setup-all.zsh (again)
Spell correction. s/regist/register/g
Fixes #22 - To make sure @var/tmp is created by yatt.command setup.

* AppPath now has app_root(), var() and var_tmp() (though it is kludge, anyway)