FORUM-540: Checkbox to select/ unselect all categories in Export Categories screen does not work
FORUM-579: [Answers] Hard-coded labels in Question Detail

Fix description: Fix also FORUM-582
Problem: Not yet implement local for question in different languages.
How to fix?

Create common method in FAQUtils.java to fix both issues.
Fix problems in FORUM-579 in files: UIQuestions.java & UIQuestions.gtmpl
Fix problems in FORUM-582 in files: UIQuestionInfos.java & UIQuestionInfos.gtmpl

Conflicts:

	answer/webapp/src/main/webapp/templates/answer/webui/UIQuestions.gtmpl
	answer/webapp/src/main/webapp/templates/answer/webui/popup/UIQuestionsInfo.gtmpl
FORUM-579: Update method getQuestionLanguages in FAQUtils.java & UIQuestionsInfo.java with properly formatted
FORUM-835: When moving a question, it's activity should also be moved

Signed-off-by: ayoub zayati <ayoub.ezzayati@exoplatform.com>