Fix issue #71, install plone.app.relationfield as a dependency so we have plone.app.intid installed as a dependency too.

Conflicts:
	src/collective/nitf/profiles.zcml
changelog & upgrade version
Print failing test to fix it on travis.
Make it work on Plone4.2 too.
Fix upgrade step for Plone 4.2
Merge branch 'master' into issue_71

Conflicts:
	CHANGES.rst
Merge pull request #76 from collective/issue_71

closes #71