Infrastructure improvements

* used `roole` tech from `bem-tools` (so it made it possible to remove `q` and `borschik` from `package.json`)
* stoped extending `bem make` with `bem-core` nodes (everything useful seems to be already included in `bem-tools`)
* updated a few npm dependencies
* added `postinstall` section to `package.json` so `bower` dependencies are installed automatically on `npm i`

// cc @narqo