Added refresh cancellation support to DeleteUnusedBranches plugin
Display last commit author and message for obsolete branches instead of deleting result

It seems that displaying delete operation result is useless and takes too much space,
knowing author and message of last commit gives evidence whether branch can be deleted or not.
UpdateSubmodulesOnCheckout
Merge branch 'master' into SubmoduleImprovements
HasSubmodules
fix CheckoutAfterCreate.Checked
Add UpdateSubmodules in FormResetCurrentBranch
Add UpdateSubmodules in FormResetCurrentBranch
Change UpdateSubmodulesOnCheckout default to true
Fix FormResetCurrentBranch UpdateSubmodules
fix design when HasSubmodules = false
Merge branch 'pr/n2175_olmobrutall'