scripting the resolver with Velocity "Template" attribute defintion

[Peter Schober]

* Cantor, Scott <cantor.2 at osu.edu> [2017-02-16 03:19]:
> It was Chad's original decision and I think he just didn't see the
> value in complicating it more than already.

That point still seems valid.  Maybe it's not worth trying to make
Template into a ScriptedAttribute replacement. After all I wanted to
make simple scripting easier and more reliable (e.g. across
deployments, Rhino/Nashorn and all that) using Velocity instead.
-peter