Adding DB mixtures.
Fixes build error in UnweightedMixture.
Added tuning for OpenNLP Spotter, SpotlightModel for running a DB-backed server.
Make Server accept a SpotlightModel directory OR a .properties file.
OpenNLP chunker spotter accepts Set of phrase types.
Merged RegexNameFinder, chunker and named entities into a single OpenNLP spotter with score-based overlap removal.
Added n-best support to DB-backed server.
No document-centric disambiguator in DB mode.
Added shell script for db-backed indexing.
Added first version of percentage of second rank to DB disambiguator.
Adding namespaces and NT types.
Added NIL handling and normalized final score via the softmax function.
Correcting Pig's total surface form occurrence counts for surface forms that are sub-sequences of other surface forms.
Fix for pig count correction and bug related to tokenization of surface forms ("East Germany" vs. "East  Germany").
Fixed smoothing problem leading to wrongly estimated NIL entity in long texts.
Bugfixes in OpenNLP spotter, extended Wikipedia heldout corpus for disambiguation tests.
Removing debugging+test files.
Making chunker and pos tagger optional.
Merge remote-tracking branch 'origin/master'
Making WikipediaHeldoutCorpus reusable.