bug#13425: new css-mode indenter

[E Sabof]

I've written a new indenter for CSS, which fixes issues with mulitline statements following a colon, and comments: 

body {

    color: #333;

    font: 15px "Helvetica Neue",

        Helvetica,

        Arial, 

        "Nimbus Sans L",

        sans-serif;

    font-weight: 300;

    line-height: 1.625;

    a { /* It also handles SCSS */

        font: 15px "Helvetica Neue",

            Helvetica,

            Arial, 

            "Nimbus Sans L",

            sans-serif;

        /* Some comment */

    }

    /* Some comment at the end of a block */

}

I wondered whether this functionality could be integrated into Emacs.

https://github.com/sabof/es-css-mode

https://github.com/sabof/es-lib (it takes some functions from it)

Evgeni