Added CORS allow methods

Signed-off-by: Carlos F. Peña <carlos@cfpg.me>
Merge branch 'master' of https://github.com/cfpg/qbitStore

Signed-off-by: Carlos F. Peña <carlos@cfpg.me>

Conflicts:
	server.js
Added simple styling

Signed-off-by: Carlos F. Peña <carlos@cfpg.me>
Merge branch 'master' of https://github.com/cfpg/qbitStore

Signed-off-by: Carlos F. Peña <carlos@cfpg.me>

Conflicts:
	app/js/app.js
	app/js/models/category.js