Dataviews: Add real hyperlinks

This adds a real hyperlink in all the <a> tags in the dataviews. That way,
one can open a Stack in a new tab, or bookmark the link.
Dataviews: only execute JS link

Added "return false" to all JS links to prevent default browser behaviour
(following the link). That way the address bar is not changed when simply
clicking a link.
Merge pull request #766 from fzadow/real-links-in-dataview

Real links in dataviews