.scss and imports could be handled better

[stubbies]

If you have global variables you need to import them to every .scss file in order to use them, that's unnecessary and takes too much time doing it manually and keep track.

example structure:

• src/
  • app/
    • styles/
      • _variables.scss
    • app.scss
    • components/
      • item/
        • _item.scss

Instead of serving separate injected files we can combine them and @import variables only once in app.scss

I'll have a look at it and maybe post the solution here or do a pull-request.