FORUM-802: [Private Messge - Notification] Message form is not displayed when clicking on 'Click here' link

Fix description:
	- Set link by extracting onclick attribute of Private Message button instead of its href attribute.
	- Fix the problem with reply button in inbox

Conflicts:

	forum/webapp/src/main/webapp/javascript/eXo/forum/ForumSendNotification.js
FORUM-797: Impossible to open watched topic

Problem analysis:
- FORUM-728 tried to handle the case when a space name contains topic word.
  This filters incorrectly the case of opening a watched topic (topic word is at the prefix)

Fix description:
- Check to avoid the invocation of wrong block code when space name contains topic word

Conflicts:

	forum/webapp/src/main/java/org/exoplatform/forum/webui/UIForumPortlet.java
FORUM-684: [ANSWER] More Actions button should be hidden

Conflicts:

	answer/webapp/src/main/webapp/templates/answer/webui/UIQuestions.gtmpl
FORUM-531: Update PR for FORUM-531 according to FQA's comment \n Fix description: Update css when deleting comment: Change from: 'ItemIcon Delete confirm' to 'confirm'
FORUM-617: i18n of Page Size in Forum List Search
FORUM-728 Broken Forum when the space name contains "tag"

Fix description: In calculateRenderComponent method of UIForumPortlet, update condition to check SearchForum, Tag and topic keys.

Conflicts:

	forum/webapp/src/main/java/org/exoplatform/forum/webui/UIForumPortlet.java
FORUM-182 | [Answer]: Unknown error when choose language for answer
Merge commit 'c47f1de2f861bedd6ffc48f824484ea9f33d1d30' into HEAD