Improve JS production-code

[Globegitter]

This will probably make things much better for smaller devices and slower connections:

• Look at creating custom jQuery build: https://github.com/jquery/jquery#how-to-build-your-own-jquery
• Create custom d3 build as mentioned in v3.1 chanelog: https://github.com/mbostock/d3/wiki/Release-Notes
  and in more detail here: https://github.com/mbostock/d3/wiki/3.1#and-one-more-thing
• think about switching from uglify (grunt-contrib-uglify) to Closure Compiler: https://github.com/closureplease/grunt-closure-tools or https://github.com/gmarty/grunt-closure-compiler
  The first might even be able to use instead of neuter and JSHint.
• Get everything to work with >= ember1.0.0 - rc2 (and latest ember-data). Neuter seems to have an issue.