hidden field
add support for hasOne relations
Merge remote-tracking branch 'upstream/master'
Merge pull request #45 from tacone/master

Add support for HasOne relations
deleting associed files and cleanup related without constraint
better explanation for back()
better explanation for back()
fix,  the field name should be always $this->name and not $this->db_name
centralize attributes()  to widget and "merge" instead override
demo fo hasOne  in dataedit demo
shortcut attr()
fix for hasone,  sharing relations reference suggested by tacone.
adding on dataedit two fields on same "hasOne" to test
model_relations as arrayobject
password field
$form->passed(\closure) alias
$form->add(...)->placeholder('fieldname');
fix password field
submit fix for css override
fix demo styled form
fix demo styled form