add grunt.js
add grunt and grunt tasks
update grunt version and add new gruntfile.js, package.json and minify and concatenate files
run grunt
add gzip compression to .htaccess
add usemin task
update package.json with usemin
update minified and concatenated files
update paths in gruntfile and add usemin task
update index.php for usemin syntax
Merge remote-tracking branch 'origin/grunt' into develop

Conflicts:
	deploy/.htaccess
	deploy/application/assets/js/script.js
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