too many changes

removed lucene and custom processors
added debug switch to enable extensive productive logging
added silent switch to mute all logging
replaced cmd project slf4j loggers with log4j loggers
simplified cmd exception structure
added catching mongo and elasticsearch connection exceptions with explicit error messages
removed delete cmd
removed lucene dependency, clashes with elasticsearch lucene 5.0 dependency in executable jar
deleted unnecessary jardesc
removed log4j dependency from utils project
renamed database constants
added elasticsearch constants
added database and elasticsearch config convenience functions
added missing database generic types
added test command to test connections to database and elasticsearch