Add $font, $media and $other modifier support

[ameshkov]

Also handle it in Filtering Log.

        {".mp4", ContentType.Media},
        {".flv", ContentType.Media},
        {".avi", ContentType.Media},
        {".m3u", ContentType.Media},
        {".webm", ContentType.Media},
        {".mpeg", ContentType.Media},
        {".3gp", ContentType.Media},
        {".3gpp", ContentType.Media},
        {".3g2", ContentType.Media},
        {".3gpp2", ContentType.Media},
        {".ogg", ContentType.Media},
        {".mov", ContentType.Media},
        {".qt", ContentType.Media},
        {".ttf", ContentType.Font},
        {".otf", ContentType.Font},
        {".woff", ContentType.Font},
        {".woff2", ContentType.Font},
        {".eot", ContentType.Font}