XmlLint'ing downloadform/pom.xml
downloadform - Fixing dependencies (#657)

Using apache commons dbcp pool for database access (the previous try
with spring classes was not pooling)
Major revamp of downloadform webapp (#657)

- Preparing some tests
- Fixing a potential race condition issue with servlet requests
  (exporting requests parameters to a new object called DownloadQuery)
- Using dbcp pool for connection pooling to the db
- Rewrite / code cleaning on the controllers
downloadform - major revamp (#657)

- Adding skeleton tests for missing controllers
- Finishing tests on DataUsage