CONTRIB 3525 Added "skip logic"/"conditional branching" feature to Questionnaire.

Signed-off-by: Joseph Rézeau <moodle@rezeau.org>
Various fixes and improvements.

Signed-off-by: Joseph Rézeau <moodle@rezeau.org>
WIP various CSS fixes

Signed-off-by: Joseph Rézeau <moodle@rezeau.org>
Conditional branching almost done.

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

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

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

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

Signed-off-by: Joseph Rézeau <moodle@rezeau.org>
updated releasenotes.txt to current build number

Signed-off-by: Joseph Rézeau <moodle@rezeau.org>
Fixed email column problem in show_nonrespondents.php

Signed-off-by: Joseph Rézeau <moodle@rezeau.org>
applied Jenny Gray's suggested patches, mostly get_context_instance replacements

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