CONTRIB-5284 :: order of subquestions in report of ranked question varies (using postgres)

Signed-off-by: Joseph Rézeau <moodle@rezeau.org>
CONTRIB-5288 :: Issue with zero in numeric question

Signed-off-by: Joseph Rézeau <moodle@rezeau.org>
CONTRIB-5298 :: Small bugs in new events system

Signed-off-by: Joseph Rézeau <moodle@rezeau.org>
CCLE-4707 - Upgrade Questionnaire to 2.7.0 (Build 2014070401)
* Performed 2.7.0 upgrade and kept UCLA core edits.
* Added a core edit to ensure that nonrespondents e-mail textarea defaults to an appropriate size.
CCLE-4707 - Upgrade Questionnaire to 2.7.0
* Removed breakpoint from behat test.