HPCC-9569 ConfigMgr - remove extra roxie info

- remove all RoxieSlaveProcess entries
  - remove duplicate RoxieServerProcess entries
  - add offset attribute
  - add redundancy option (slaveConfig)
  - rename tab PORTS
  - Remove redundancy dialog
  - code cleanup

Signed-off-by: Gleb Aronsky <gleb.aronsky@lexisnexis.com>