ClientAgent: Implement CLIENTAGENT_GET_REMOTE_ADDRESS. Closes #303
Docs: Document CLIENTAGENT_GET_REMOTE_ADDRESS
ClientAgent: Change CLIENTAGENT_GET_REMOTE_ADDRESS msgtype
Docs: Add missing arg
ClientAgent: Change CLIENTAGENT_GET_REMOTE_ADDRESS msgtype again
Tests: Add test for CLIENTAGENT_GET_REMOTE_ADDRESS
ClientAgent: Extend CLIENTAGENT_GET_REMOTE_ADDRESS to return remote port, local ip and local port
Docs: Improve wording
Merge pull request #304 from loblao/master

ClientAgent: Implement CLIENTAGENT_GET_REMOTE_ADDRESS. Closes #303