Refactoring and adding

Simplified Order/Order Items: Fixed MVC for both.  Created new table
tbl_om_order_item_sn. and used Gii to create Model and CRUD.  Updated
load_demo_om.sql.
Merge branch 'ordermgmt' of github.com:maestrobpm/maestro
Fixes to OM db load script
replace default skeleton main page with Maestro page
Merge branch 'ordermgmt' of github.com:maestrobpm/maestro