TAJO-1020: Cleanup legacy setting parameters and TajoConf

https://dbserver.korea.ac.kr/jira/browse/TAJO-1020
Merge pull request #1 from hyunsik/TAJO-1020

TAJO-1020: Cleanup legacy setting parameters and TajoConf
TAJO-1021: Refactor StorageManager to use reflection for scanner and appender

https://dbserver.korea.ac.kr/jira/browse/TAJO-1021
Merge pull request #2 from hyunsik/TAJO-1021

TAJO-1021: Refactor StorageManager to use reflection for scanner and app...
Updated the project home and repository urls.