Add stackoverflow link that uses an escience and projectname tag

[wrvhage]

Add a stackoverflow link to each software project page that automatically adds an escience tag and project name tag.

[c-martinez]

Not sure we can create an escience tag: https://stackoverflow.com/help/privileges/create-tags unfortunately :-(

[nielsdrost]

Guess we could start with a related tag until we gain enough "points" to create eScience:

http://stackoverflow.com/questions/tagged/data-science http://stackoverflow.com/questions/tagged/bigdata