DNN-5308 Remove obsolete meta tags
Since meta-tags are completely configurable now, we should only default to those which should be in most installations.
DNN-23726 Allow greater control of Robots meta tag
DNN-5733 - added control of concurrency when new versions are created.
DNN-6235 dnn.FileUpload.js Client side enhancements
Merge pull request #231 from dnnsoftware/bug/DNN-5308

DNN-5308 Updates to HTML5 Compatibility
dnn-5055 include superuser field in all user docs - it has no implication on security, but can help query based on this field