EA-1  | Implementing DrugOrder add, revise and stop

EA-1  | Implementing DrugOrder add, revise and stop.

- Reflecting changes to duration units from TRUNK-4446
- Adding integration test for discontinuing orders
- Rename non-version specific base test
- Introduce profiles in omod to run tests against OpenMRS 1.9 and OpenMRS 1.10
- Moved DrugOrderBuilder to 1.10
- Moved TestOrderBuilder to 1.10
- Fixed EncounterTransaction.DrugOrder to incorporate contract changes from 1.10
- Removed all references to old order entry
@djazayeri - We have an Encounter Transaction DrugOrder as well. The only reason for explicitly using the class name was to make it apparent in the code, that we are referring to the OpenMRS drugOrder and not the ET.DrugOrder. This particularly helps to separate the 2 domain, and avoid confusion.