Symlinks instead of connect middleware.

* This should be easier for people to grasp.
Update Grunt plugins.

* Removed no-longer used "copy" Grunt plugin.
* Removed no-longer used "handlebars" Grunt config.
* Updated "watch" plugin and fixed livereload settings.
Remove fix_sourcemaps task.

* require.js 2.1.9 seems to have fixed all the issues!