added Helper class from undertow-edge project. Now using one method for request parameter validation/normalisation and ThreadLocalRandom for the random number generation See:TechEmpower/FrameworkBenchmarks#1152
returning single object for /db when only one query was executed
Returning array for results of /db with queries parameter present
Merge pull request #1221 from zloster/dropwizard-java-random

TechEmpower/FrameworkBenchmarks#1152 - dropwizard now using ThreadLocalRandom