Upgrade maven-parent-pom to version 10 + maven-depmgt-pom to 6-SNAPSHOT

Conflicts:
	pom.xml
FORUM-257 | Fix UI of print questions
FORUM-395 | Java API - Improve the javadoc : add a package description + remove useless comments.

Conflicts:

	answer/webapp/src/main/java/org/exoplatform/answer/webui/popup/UIAnswerEditModeForm.java
FORUM-395 | Java API - Improve the javadoc. Add packages description.