STREAMS-220 | Rewrote FacebookPostActivitySerializer to guarantee final Activity data shape
Fixed failing RSS Streams test
STREAMS-220 | Including Facebook object in extensions
Merge branch 'master' into STREAMS-220
Merge remote-tracking branch 'robdouglas/STREAMS-220'
Merge remote-tracking branch 'rbnks/RSS-PROVIDER-TEST-FIX'
Merge branch 'master' into STREAMS-68,218

Conflicts:
	streams-contrib/streams-provider-facebook/src/main/java/org/apache/streams/facebook/api/FacebookPostActivityConverter.java
improved configuration scheme