Added Survey From Field validation.
Also added the COMMENT_PREFIX in Survey model to ensure that comments are stored in the same way everwhere.
Reviewed by: Lennard de Rijk
#!/bin/sh
NOSE_WITH_DOCTEST=t
export NOSE_WITH_DOCTEST
NOSE_DOCTEST_EXTENSION=txt
export NOSE_DOCTEST_EXTENSION
#NOSE_DETAILED_ERRORS=t
#export NOSE_DETAILED_ERRORS
nosetests $*