Add SocialDataState to check the current state of the SocialDataBundle
Fix bug while updating asynch data pull from SN
Fix post message
Fixed Linkedin Parser error, update ISocialData core and Web-APP SocialDataController
moved some method to compare SocialNetwork from SocialDataComm to SocialDataNetworkUtil
try to fix socialdata after changine socialdata external schema

Merge branch 'development' of https://github.com/societies/SOCIETIES-Platform into development

Conflicts:
	platform-infrastructure/sns/socialdata/src/main/java/org/societies/platform/socialdata/SocialData.java
	platform-infrastructure/sns/socialdata/src/main/java/org/societies/platform/socialdata/SocialDataServer.java
	platform-infrastructure/sns/socialdata/src/main/java/org/societies/platform/socialdata/converters/FriendsConveterFactory.java
	platform-infrastructure/sns/socialdata/src/main/java/org/societies/platform/socialdata/converters/GroupConveterFactory.java
	platform-infrastructure/sns/socialdata/src/main/java/org/societies/platform/socialdata/converters/PersonConverterFactory.java
	platform-infrastructure/sns/socialdata/src/main/java/org/societies/platform/socialdata/service/JsonToSocialDataService.java
Add helper to match string and enum for social network
Add External API for SNS