DAR-112 Only store oldest notification for a specific thread/author.
DAR-201, add whitespace-only string validation to title field for Wall and Forum new message form
Merge branch 'DAR-201' into dar-sprint-7
Merge pull request #864 from Wikia/DAR-112

DAR-112 Only store oldest notification for a specific thread/author.
Merge branch 'dev' into dar-sprint-7
Merge pull request #868 from Wikia/dar-sprint-7

DAR Sprint 7