Ignore bower-installed files
Use requirejs to load JS and JSON files
Fix spacing between score label and score number
JS files are now loaded via requirejs
Update build to minify requirejs and plugins
More ignores
Move _locales to locales

Crosswalk packaging into an apk ignores directories matching
_*

As we're no longer using the Chrome extensions i18n API, which
uses _locales as the automagic location for translations JSON
files, a simple rename to "locales" makes everything work.
Merge pull request #4 from 01org/fix-load-timing-3

Fix load timing by using requirejs to sequence resource loading