add the javascript/template/soy/soydata_converters.js in the opensource_file
add the javascript/template/soy/soydata_converters.js in the opensource_file

This enables using the jssrc backend with safe HTML protobufs.

-------------
Created by MOE: https://github.com/google/moe
MOE_MIGRATED_REVID=130115275

google/closure-templates,Medium/closure-templates,rpatil26/closure-templates,rpatil26/closure-templates,Medium/closure-templates,google/closure-templates,google/closure-templates,google/closure-templates,Medium/closure-templates,yext/closure-templates,google/closure-templates,yext/closure-templates,Medium/closure-templates,rpatil26/closure-templates,yext/closure-templates,Medium/closure-templates,rpatil26/closure-templates,yext/closure-templates