FORUM-822 | [TC-4.0.5][Forum Write]Patch validation of SOC-4034 and FORUM-719

Conflicts:

	forum/service/src/main/java/org/exoplatform/forum/service/cache/CachedDataStorage.java
	forum/service/src/main/java/org/exoplatform/forum/service/impl/JCRDataStorage.java
	forum/service/src/main/java/org/exoplatform/forum/service/jcr/listener/StatisticEventListener.java
	forum/service/src/test/java/org/exoplatform/forum/service/ForumServiceTestCase.java