LRDOCS-969 Added section describing necessary step to take before upgrading from Social Office 3.0.0 to 3.0.1
Documented Private Messaging filtering capabilities. LRDOCS-428.
Merge branch 'so-reorg' of https://github.com/ngaskill/liferay-docs into LRDOCS-969
Reviewed LRDOCS-428
Merge pull request #903 from jrao/LRDOCS-969

https://issues.liferay.com/browse/LRDOCS-969