Update Quantity.java

Replaced some references to Measurement
UNITSOFMEASUREMENT-25: Adjust spec document to recent code changes 
Papyrus UML for Spec Document
Task-Url: https://java.net/jira/browse/UNITSOFMEASUREMENT-25
UNITSOFMEASUREMENT-80: javax.measure.spi.UnitFormatService uses
java.util.Locale 
Removed Locale reference
Task-Url: https://java.net/jira/browse/UNITSOFMEASUREMENT-80
UNITSOFMEASUREMENT-80: javax.measure.spi.UnitFormatService uses
java.util.Locale 

Task-Url: https://java.net/jira/browse/UNITSOFMEASUREMENT-80
UNITSOFMEASUREMENT-25: Adjust spec document to recent code changes 
Updated UML
Task-Url: https://java.net/jira/browse/UNITSOFMEASUREMENT-25
Update SystemOfUnitsService.java

Updated JavaDoc
Update SystemOfUnits.java

Updated JavaDoc
Update SystemOfUnits.java
Update UnitFormat.java

Updated JavaDoc
Update Quantity.java

Updated JavaDoc
UNITSOFMEASUREMENT-25: Adjust spec document to recent code changes 
Updated JavaDoc of Dimension
Task-Url: https://java.net/jira/browse/UNITSOFMEASUREMENT-25
UNITSOFMEASUREMENT-25: Adjust spec document to recent code changes 

Task-Url: https://java.net/jira/browse/UNITSOFMEASUREMENT-25
UNITSOFMEASUREMENT-25: Adjust spec document to recent code changes 
Updated JavaDoc
Task-Url: https://java.net/jira/browse/UNITSOFMEASUREMENT-25
UNITSOFMEASUREMENT-82: EDR 
Updated EG team
Task-Url: https://java.net/jira/browse/UNITSOFMEASUREMENT-82
UNITSOFMEASUREMENT-82: EDR 
Tagging
Task-Url: https://java.net/jira/browse/UNITSOFMEASUREMENT-82