PLF-2322: [Navigation Selector] Unknown Error when clicking the "arrow up"

Fix description:
	- Do not update anything if the destination node is null
PLF-5509: NullPointerException when view profile of a deleted user

Fix description:
* If the user no longer exists, the full name is empty.
PLF-5667: Useless log when the intranet extension is removed

Fix description:
- Check if default logo exists before getting it
PLF-5815: eXo in iframe issues

Problem analysis
- Web browser will be reloaded when selecting space

Fix description
- Only redirect appropriated frame
PLF-5728: Use custom data validator for Navigation Node's Name

Fix description:
* Use custom identifier validator for Page Node Form. The validator is defined as system properties.
PLF-5648: Unknown Error when cutting a node into its child.

Fix description:
* Forbid to move a node into its child.
PLF-5752: Update TemplateService config for cluster from EXOGTN-1758

Fix description:
- Set parameters for Template Service cache in cluster mode.
Merge commit 'cac9a72605a78523c192c20ba8b9930a3444383d' into HEAD