XE-1324: Make the 'Template name' field mandatory
* Add live validation for template name field.
XE-1324: Make the 'Template name' field mandatory
* Actually the live validation resources are loaded by default on edit mode.
XWIKI-9401: Measure active XWiki installations
XWIKI-9420: Generate a unique instance id
XWIKI-9401: Measure active XWiki installations
* Refactor to introduce the xwiki-platform-instance module
Merge remote-tracking branch 'upstream/master' into XWIKI-9409

Conflicts:
	xwiki-enterprise-web/pom.xml