Region Reassignment - best fit + locality

Config_lightest
- made region smaller in an attempt to trigger locality evaluation
(unsuccessful)
WorldMap.h
- predicate to sort regions in descending order
- function to evaluate locality as a tie breaker
WorldMap.cpp
- lines 428 to 470 implement best fit without locality considerations
- evaluateLocality() called when tie breaker between regions is required
NOTE: evaluateLocality has not been properly/thoroughly tested