Replace libs with bower

it's me again, I hope you don't mind my many PRs, I really like your project!

I don't know if you are familiar with [bower](http://bower.io/), it's a package manager for client-side libraries and frameworks. I noticed, that you used the `libs` directory to store things like jQuery, FontAwesome and others. It's good practice to keep those dependencies out of your repository and use a package manager like `bower` to handle them. The downside is, that you have to install `bower` and run an extra command in order to install Ukansearch.

What do you think?