Fix typo in ServerActivity API
Merge pull request #157 from bstansberry/fix-server-activity

Fix typo in ServerActivity API
[WFCORE-60] Add a registry for capabilities and requirements, modifiable via the OperationContext
[WFCORE-60] Add convenience ops to base add/remove handlers
[WFCORE-60] Add ability to register needed capabilities to the subsystem test infrastructure
[WFCORE-60] Remove 'getDescription' from the capability API until we clarify its use