bug fixes for Jet toolbox

Forward port of Dinko's JetDeltaRValueMapProducer.cc, which correctly handles strange corners of phase space.

Changes to RecoJets/JetProducers/BuildFile.xml needed for compilation.

Corrected RecoJets/JetProducers/python/QGTagger_cfi.py to read from condDB rather than a local sqlite file.

Fixed various config files to use correct jet collections.