add thomasdesvenain secure
Merge pull request #9 from tdesvenain/master

Clear address field If 'use parent address' is selected
Merge branch 'master' of github.com:collective/collective.contact.core
avoid fail on travis
Fix: Avoid failure on person
  if for any reason person title, firstname or lastname attribute is not
set.
remove tdesvenain secure
If held position implements IContactDetails behavior,
then show contact details fields on add contact form.
Fix: Hide use parent address:
     - works in overlays,
     - always display use parent address on held position if it
implements contact details.
UI: use classes instead of ids on address because it can be used
  several times on the same page.
pylint, jshint