add type => 'break' for form menu tabs
define variable
Change default height for form field tree
Add hide_subset option, to httpd.conf
Add __refresh_tree option to , who refresh tree with url
Merge remote branch 'cheby/hide_subset'
Merge remote branch 'cheby/form_menu_breaker'
Merge remote branch 'cheby/change_default_height'
Merge remote branch 'cheby/refresh_tree'