Update pom.xml version to 4.0.0-stabilization-SNAPSHOT
SOC-3114 | Build link of space and fix unittest

Conflicts:

	component/core/src/main/java/org/exoplatform/social/core/search/AbstractSocialSearchConnector.java
	component/core/src/test/java/org/exoplatform/social/core/search/SpaceSearchConnectorTestCase.java
Merge branch 'feature/stabilization'
 Merge branch 'feature/stabilization - Change versions.