implement production essentials

[rosshadden]

• concat/minify scripts and styles
• compress images
• cache busters
  • likely option-based:
    • git sha1s
    • timestamps
    • none

[optikalefx]

I'd rather ship a gruntfile / gulp file. I don't think CS should concat files. However, cachebusting I think has to be done by the server. I think this should be 2 tickets. Agree?

[rosshadden]

I don't know... This needs to be thought out more, for sure.