Replacing Location object with GroundStation object.

* Renamed ILocationSpecific to IGroundStationSpecific.
* Using satellite name and ground station name instead of Satellite
and GroundStaion objects where possible.
* Removed dopplerShift argument from the requests. It has to be calcualted
for each individual frequency.
Removed log4j.properties from org.hbird.business.business-solr.