HACKATHON1.2 - Adding javascript file to handle validation for Forest Plot. This will need to be phased into the generic validation code at some point.

Conflicts:
	grails-app/views/datasetExplorer/datasetExplorer.gsp

added from cherry-pick of bc04bde (origianlly by mtmcduffie <mcduffie.michael@gmail.com>)

Apperently added during the Boston Hackathon push, February 6, 2014.
Merge branch 'changes' into london_hackaton