GDA-5999 jreality independent classes moved to org..dawnsci.plotting.api

This allows plotting code that makes use of the independent classes
has no dependency on the jreality plugin itself.
Merge branch 'master' of ssh://dascgitolite@dasc-git.diamond.ac.uk/scisoft/scisoft-ui.git
Attempt to fix compilation errors.
Merge branch 'master' of ssh://dascgitolite@dasc-git.diamond.ac.uk/scisoft/scisoft-ui.git