NWUKFS-469 (COA 27) Maintain system wide account groups
*  Removed Organization Code
*  Made Account Group Code PK
*  Added Rule for dates
*  Added new Doc type
NWUKFS-458 (COA25) Account group on account
*  Did refactoring to adhere to correct naming standards
Merge branch 'master' of https://github.com/nwukuali/nwu-kfs