Fix to meta data locking problem.
Moved LoaderService to scisoft.analysis.osgi plugin.
Fix to http://jira.diamond.ac.uk/browse/DAWNSCI-764
Delete unnecessary preference menu
Added warning that PythonUtils methods do not work as expected on
Windows
Fix NCD convert wizard page header
Added squeeze to expression dat namespace
Use lazy dataset name in ComboBox (to work for Image Stack)