- [sass] added `z-indexes.scss`
- [sass] added styled `.islet` object
- [sass] added imports for z-indexes and islet into `style.scss`
- [sass] added `.color--brand--red`
- [assets] added `download` svg icon
- [nj] commented out temporary submenus in sidebar
- [nj] removed double space from `layout`
- [data] fixed typo in `sidebar-menu-equipment`
- [nj] improved `оборудование` entry layout to handle more complex situations
- [nj] added actions blocks, texts images and comments to `оборудование' entries based on provided PSDs