Global updates

• Removed all custom utils, solutions, all possibly unnecessary for users libs
• The project was transformed from "example-like" to more" boilerplate-oriented."
• Removed /docs folder. Docs live only in README.md.

SSR

• Added react-helmet SSR
• chokidar watcher closing, when it's unnecessary to continue watching
• remove chokidar from server/i18n. Import i18n locals directly in server-side code.
• <Root> dispatches APPLICATION_INIT only once. Fix react-tree-walker's side-effect with multiple APPLICATION_INIT dispatching.

Auth

Removed anything related to auth:

• server API endpoint
• redux auth actions and reducer
• client API requests
• allowed routes handling

Webpack

• Improved webpack "universality" (dev mode). 2 ports, 2 dev servers (like in Razzle)
• Added