Add API method to search for item by name and folder id

Also return folder id with the item
Merge pull request #62 from jamiesnape/SearchItemFolderId

Add API method to search for item by name and folder id
Add method to get all scalar DAOs for a submission in the tracker module
Merge pull request #66 from jamiesnape/TrackerScalarDAOs

Add method to get all scalar DAOs for a submission in the tracker module
Upgrade XML_Parser and XML_Serializer in api module to latest versions

Silences some annoying warnings.