CONTRIB-5195 :: Replace deprecated textlib:: with core_text

Signed-off-by: Joseph Rézeau <moodle@rezeau.org>
Let the upgrade work from MOODLE_25 to MOODLE_27. Thanks to Didier Raboud [OdyX]

Signed-off-by: Joseph Rézeau <moodle@rezeau.org>
CONTRIB-5199 :: Fixed upgrade problem from version 2.5 and updated build number.

Signed-off-by: Joseph Rézeau <moodle@rezeau.org>
2.7 MATURITY_STABLE for the moodle repository

Signed-off-by: Joseph Rézeau <moodle@rezeau.org>
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>
Merge remote-tracking branch 'upstream/MOODLE_27_STABLE' into MOODLE_27_STABLE