Translation

[vlandham]

add translation capabilities to learn js data.
A lot of changes:

• move off of docco in favor of straight markdown with code snippets
• each language has its own set of files inside locales
• snippets for each task are in snippets
• there are js snippets and .out snippets
• grunt tasks merge language files with snippets and make intermediate .md files in build
• final step uses grunt-markdown to generate site using custom.jst template.
• results are sent to public.

I believe we can remove src files now - as they will be growing more and more out of date.

I believe, as @ajpiano might suggest - we could remove built files from git repo now, as they don't really help with much anymore. though they could still be useful for someone who wants all the JS for the different sections....