First commit on DOI from tags branch.
Final version before remove the multiple Obtain DOI buttons.
Began changes to single Obtain DOI format.
Fixed Adding tag feature

Note:  The modal box still needs some work in displaying the list of items being tagged
Merge branch 'devel-tagDoi' of http://github.com/jfharney/ScientificWorkspace into devel-tagDoi
Completed basic creation of DOI from tags, added static DOI tree on main page.