REST project/{id}/plannings

Change-Id: I57f53f682417cb4522406cc82ec27608891169b4
Introduce pagination for REST planning resources

Change-Id: I7138afa6c7b44cb94b9f27cf1600a8d71cfbb960
Merge remote-tracking branch 'gerrit/5334_REST_plannings' into stable

* gerrit/5334_REST_plannings:
  Introduce pagination for REST planning resources
  REST project/{id}/plannings

Conflicts:
	src/common/event/Event.class.php
	src/common/project/REST/v1/ProjectResource.class.php

Change-Id: Ib3fbb3c17dc1652e87b00381b2f2a0348ee2454b
This is Tuleap 6.6.99.13

Change-Id: I6b5b4e1b3736f7d1ffd30eb5831a25cb07e0d4d9