add clientside previewer script

 -MODIFY: customize dust.fs to stop adding '.dust' extenstion to
   dust templates. Also moved it from node_modules to
   lib/assessment
 -ADD: Grunt tasks for asq.js previewer script
 -MODIFY: template names
 -MODIFY: parse and markupGenerator to be compatible with clientside
 -MODIFY: parse and markupGenerator to define objects with prototype
  functions
 -UPDATE: asset presentation jquery to 1.10.2