no need to compile less files on each start;
move public/index.html to index.hbs;
split index.hbs into different hbs files and compile them;
move all stylesheets into one less file;
add analyze index.hbs and make index.html tasks in Gruntfile.js;
find and add uglify javascripts;
improve uglify scripts;
add ember.min.js and handlebars.runtime.js;
fix uglify;
improve uglify with options and one liner;
add minified version of handlebars runtime;
add concat methods;
update grunt file;