Issue #763 - Generate RCP View for Ranging1959ForecastContribution
minor tidying, to remove extra braces
rename stored object, store enough 1959 data to pre-populate the UI
renaming to match model API
unrelated - tidy the attribute name
new TaskDescription class
trim model
reflect XStream schema updates
Merge pull request #772 from pecko/issue763

Issue #763 - Generate RCP View for Ranging1959ForecastContribution Fixes #763