Updated `enb` dependencies (WIP)

Resolved #953
```js
function wrapInPage(bemjson, meta) {
    var basename = '_' + path.basename(meta.filename, '.bemjson.js');
    return {
        block : 'page',
        title : naming.stringify(meta.notation),
        head : [{ elem : 'css', url : basename + '.css' }],
        scripts : [{ elem : 'js', url : basename + '.js' }],
        mods : { theme : getThemeFromBemjson(bemjson) },
        content : bemjson
    };
}

function getThemeFromBemjson(bemjson) {
    if(typeof bemjson !== 'object') return;
  
    var theme, key;
  
    for(key in bemjson) {
        if(theme = key === 'mods' ? bemjson.mods.theme :
            getThemeFromBemjson(bemjson[key])) return theme;
    }
}
```