fix the computation of the forced travel to meet the return trip deadline
fix and improve hotel creation/serialization
fix curMinPrice
performance improvements
cleanup
improved db test
various hot bugfixes
compute scores about recursive pruning
add printout at every step
refactoring : additionalTransfer
improved logging while parsing db
Merge branch 'master' into distributed

Conflicts:
	amadeus/src/journeyPlanner/Journey.java
	amadeus/src/journeyPlanner/Main.java
compute scores about recursive pruning

Conflicts:
	amadeus/src/journeyPlanner/Journey.java
add printout at every step

Conflicts:
	amadeus/src/journeyPlanner/Journey.java
refactoring : additionalTransfer

Conflicts:
	amadeus/src/journeyPlanner/Journey.java
improved logging while parsing db
fix rand regression bug
add variable dbFileName
add variable dbFileName
fix db checkup printout