PMO-2259: applying stricter rule in validation for piecewise linear distributions
releasing plugin version 0.4.29
PMO-2460: weibull distribution added
releasing new plugin version 0.4.30
PMO-2460: correcting validation rule
releasing new plugin version 0.4.31
corrected core plugin version
Merge branch '1.6.x'

Conflicts:
	RiskAnalyticsCommonsGrailsPlugin.groovy
	grails-app/conf/BuildConfig.groovy
	src/groovy/org/pillarone/riskanalytics/domain/utils/validation/DistributionTypeValidator.groovy
	src/groovy/org/pillarone/riskanalytics/domain/utils/validation/distributionTypeValidator.properties
	src/groovy/org/pillarone/riskanalytics/domain/utils/validation/distributionTypeValidator_de.properties
	src/groovy/org/pillarone/riskanalytics/domain/utils/validation/distributionTypeValidator_en.properties