LPS-42489 Update custom query & StatusFinderImpl in Chat portlet to support multiple social relation types

- Deprecate existing 'findBySocialRelationType' method
LPS-42489 Add new service method 'getSocialStatuses' to be able to pass an array of 'types'
LPS-42489 Apply changes to DefaultBuddyFinderImpl

Currently,

		SocialRelationConstants.TYPE_BI_CONNECTION,
		SocialRelationConstants.TYPE_BI_COWORKER and
		SocialRelationConstants.TYPE_BI_FRIEND

are the only relation types that can be created through the UI in 6.1.
LPS-42489 Backport property changes of LPS-42584

Add new property "buddy.list.allowed.social.relation.types" to Chat portlet to allow administrators to define which Social Relation types are allowed to query based on the available ones provided by the API (SocialRelationConstants)

    - Renaming "friends" to "social": "friends" was only one of the possible social relation types. "social" sounds more general and expresses better the new functionality
    - Updating description for "buddy.list.strategy"
LPS-42489 Backport changes of LPS-42584 to DefaultBuddyFinderImpl

- Keep branches in sync.
- Preserve "friends" for backward comptability.
LPS-42489 Autogenerated
LPS-42489 Undo service.properties change