tasks #7203: Catch wiki events

* FTSSystemEvents fired when catching events throwed in Wiki (create and update)
* Currently, these FTSSystemEvents do nothing

Change-Id: I1f68c22fa5a3edc0c19869b3631fb2e1c753dd74
Merge commit 'refs/changes/62/2762/4' of ssh://gerrit.tuleap.net:29418/tuleap into HEAD

* ssh://gerrit.tuleap.net:29418/tuleap:
  tasks #7203: Catch wiki events

Change-Id: Ic847699a291ff3271f120e8bd861ea8e56f754e5
This is Tuleap 7.2.99.47

Change-Id: I776544bb6cd3204d3b2042c2ed9b750db91d0be0