UI-2037: remove duplicate stylesheet on activity share file
SOC-3387 | Incorrect UI of Add Space
UI-3029 bug UI of button select file
SOC-3387 | Incorrect UI of Add Space
SOC-3814 | Error while rendering the porlet while running scenario PERF_PLF_ENT_INTRANET_SOCIAL_READ_SPACE_HOME with PLF410
SOC-3870 | CLONE - Duplicate activity when add user into space group
Merge master into feature/stabilizatin branch
SOC-3529 | [Feature Unified Search] Search connector doesnt work properly with japanese data

Conflicts:
	component/core/src/main/java/org/exoplatform/social/core/storage/impl/SpaceStorageImpl.java
	component/core/src/main/java/org/exoplatform/social/core/storage/impl/StorageUtils.java
	component/core/src/test/java/org/exoplatform/social/core/storage/StorageUtilsTest.java
SOC-3693 | UIActivityContainer: Slowness in checking activities

Conflicts:
	component/core/src/main/java/org/exoplatform/social/core/storage/impl/ActivityStreamStorageImpl.java
	component/core/src/test/java/org/exoplatform/social/core/storage/ActivityStorageTest.java
	component/core/src/test/java/org/exoplatform/social/core/storage/impl/ActivityStorageImplTestCase.java
SOC-3665 | UISpaceNavigationPortlet: Slowness in getLastAccessedSpace

Conflicts:
	component/core/src/main/java/org/exoplatform/social/core/storage/impl/SpaceStorageImpl.java
SOC-3693 | UIActivityContainer: Slowness in checking activities - fixed Stream order
UI-3051: CLONE - Activity - The avatar, space info is displayed not good.
UI-3050 CLONE - Space settings - Select User button effect is not good
Merge branch 'feature/stabilization'
Change pom version after merge branch feature/stabilization
Merge branch 'master' into feature/social-notifications

Conflicts:
	webapp/resources/src/main/webapp/skin/less/social.less