request #6872: Changing remaining effort of a card in cardwall renderer display a json string

Change-Id: Ied0a698002d43c91fe13c083ff17a579d6850358
Merge commit 'refs/changes/33/2433/1' of http://gerrit.tuleap.net/tuleap into HEAD

* http://gerrit.tuleap.net/tuleap:
  request #6872: Changing remaining effort of a card in cardwall renderer display a json string

Change-Id: Ia6af4fe2a042185f0dd4e244b6511cb47a0066b0
This is Tuleap 7.0.99.16

Change-Id: Id4ef409596dfbad4d5d9ae52513fa9a84200ad2d