Weekly engineering 1219

Ben Ross: Ability to auto add apps via powr js

Sergey Tyan: if you have an error when importing files in [app].js files you can use require, for example: import { renderPowrReactComponents } from '@/../helpers/react_view_helper'; can be replaced with const { renderPowrReactComponents } = require('@/../helpers/react_view_helper');

Rustam Khakimzhanov: Code coverage: simplecov & istanbul