1. Changes .xml and .xsd resources for tests
2. api/pom.xml should be returned to its original state after debugging
3. Changed constructors for pojos CategoryCombo, CategoryOption,
DataElement,Option,OptionSet, OrgUnit, ReportTemplate
4. Changed how OpenmrsDhisObject handles empty uids to use
CodeGeneration class from DHIS2; added a test to DhisServiceTest to
check this.
5. Changed HibernateDhisDAO to use new variable names for DataElement,
same with DataElement and ReportTemplate hbm.xml
6. Replaced metaData.xsd with a new one

I believe this is everything I have been working on except for the
ServerMetadata and DhisXmlUtils classes