Added disjoints to entity subclasses
Additional class QualityMeasure and properties

Addition of QualityMeasure and related properties hasMeasure,
isMeasureOf , hasNumerator, hasDenominator
Rationalised title data property

Tidied up title data property which appeared 3 times to incorporate all
domains where it is used into one property.
Addition of Quality Measure and associated mappings

Addition of Quality Measure, numerator and denominator and mappings to
quality statement.
Add numerator and denominator classes

Add numerator and denominator classes, remove data properties has
numerator and has denominator and make them object properties with
quality measure as domain and numerator/denominator as range
Merge pull request #14 from alidesi/master

Added disjoints to entity subclasses