CONTRIB-3528 + See releasenotes.txt for more changes.

Signed-off-by: Joseph Rézeau <moodle@rezeau.org>
Made summary/description optional when creating new questionnaire.

Signed-off-by: Joseph Rézeau <moodle@rezeau.org>
CONTRIB-3528 Fixed CAST bugs with PostgreSQL

Signed-off-by: Joseph Rézeau <moodle@rezeau.org>
CONTRIB-4027 and made access.php moodle code-style compliant.

Signed-off-by: Joseph Rézeau <moodle@rezeau.org>