Proposed fix to UpgradeVersion http handler
Fix bug where web.config gets empty host element added while attempting to remove the vpp zip config item.
Small amount of resharper refactoring
Merge pull request #541 from n2cms/proposed-upgradeversionfix

Proposed upgradeversionfix resolves #539
Merge branch 'xmlrepository' of github.com:n2cms/n2cms into xmlrepository