Additional fixes suggested in patch review
Merge pull request #100 from tgtshanika/master

Additional fixes suggested in patch review
Fixing issue APPM-241
Rename ApiMgtDAO class as AppMDAO.
Rename APIUtil as AppManagerUtil.
Merge pull request #99 from lahiru823/master

Fix for : Access Policy - not persisted [UI]
Sorting Throttling Tiers by reverce order