UI-2821: [PLF 4] Incorrect UI of Top Navigation - add : into new topic and poll
FORUM-533 | [Answer] Should display Answer form when click on Answer link in activity stream
UI-2728 | CLONE - Activity - Incorrect UI and behavior of Answer
UI-2728 | CLONE - Activity - Incorrect UI and behavior of Answer - add check answers is null
DOC-2898 Review the Forum APIs
Merge branch 'master' into feature/upgrade-xwiki-5.0.x