Update a few dependencies.

Looking toward moving to Scala 2.11 and also remove some conflicts for when I add a Monocle dependency real soon now.
Implement db.eval.
Improve MapReduce evaluation.

Js *FunDecls also have an implicit Block now, rather than accepting any Stmt as a body.
Simplify some untypers.
Merge pull request #153 from sellout/minor-fixes

Some changes from the WorkflowPhase branch that could be separated out.
remove unused files, abstractions, etc. as part of #157