Wait for last form field to appear.

Hopefully this fixes "New user overlay closes on valid data"

RF test Jenkins currently fails:
http://jenkins.plone.org/job/plone-5.0-python-2.7/477/testReport/Products.CMFPlone.tests.test_robot/RobotTestCase/Scenario_New_user_overlay_closes_on_valid_data/)

Have reproduced  this locally, but not reliably.
What we saw locally was that email or username gets filled in as fullname, and
email stays empty. Maybe a timing issue.
Use Input Text For Sure

in an attempt to prevent Jenkins heisenbug in "New user overlay
closes on valid data".

http://jenkins.plone.org/job/plone-5.0-python-2.7/477/testReport/Products.CMFPlone.tests.test_robot/RobotTestCase/Scenario_New_user_overlay_closes_on_valid_data/)
Fix spaces
Merge pull request #71 from khink/master

Use "Input Text For Sure" and wait for last form field to appear.