fix(js): Add missing jQuery 2.0.3 map

Added from

    http://code.jquery.com/jquery-2.0.3.min.map
fix(js): Add missing head.js 1.0.2 map

Added from

    http://cdnjs.cloudflare.com/ajax/libs/headjs/1.0.2/head.min.js.map
fix(js): Add missing underscore.js 1.5.1 map

Added from

    https://github.com/jashkenas/underscore/raw/1.5.1/underscore-min.map
Merge branch 'add-js-maps'

* add-js-maps:
  fix(js): Add missing underscore.js 1.5.1 map
  fix(js): Add missing head.js 1.0.2 map
  fix(js): Add missing jQuery 2.0.3 map