Add .DS_Store to .gitignore
Move libs to lib/
Add require.js and associated scripts
Move build_resources functionality into manager.py
Merge remote-tracking branch 'bitmap/requirejs'

* bitmap/requirejs:
  Move build_resources functionality into manager.py
  Add require.js and associated scripts
  Move libs to lib/
  Add .DS_Store to .gitignore
Fix location of build.js in resources.py, add 'all' command for building all resources.