fixed issue of where issue status is not updated based on labels
do not directly modify labels in issuedialog
Merge branch 'master' into fix-mutation
Merge branch 'master' into fix-mutation
Merge branch 'master' into fix-mutation
return copy of labels in getLabels
modified adding of labels in setlabels
refactored processInheritedLabels
return copy of parents list in getParents
copy old issue held by issue dialog
tidy up model