Make better use of Browser, Device and OS

As seen in the device data repository:
https://svn.apache.org/viewvc/devicemap/trunk/data/1.0/device-data/src/main/resources/devicedata/

Aspects

• Browser
• Device
• Operating System

have always been there at the heart of OpenDDR.
Except for DeviceDataSource.xml the other files just weren't maintained, e.g. OperatingSystemDataSource.xml contains just a single entry for Apple iOS 1.0 (also pretty outdated now)

This story tries to look at making better use of the files in 1.0 so a JSON (2.0) port may also benefit from it if we decide to follow that path and there's enough demand for a JSON format.