[WIP] feature/breakpoints

- added breakpoints to collapse/expand navigation (1440px)
- moved and integrated preview component including backend handling (tagged services and compiler pass)

__Tasks:__

- [x] introduce breakpoints for expanded/collapsed state of navigation
- [x] move preview component to admin
- [ ] introduce new preview component features/layout
- [ ] add tagged services for compiler pass
- [ ] implement compiler pass
- [ ] gather feedback for my changes

__Informations:__

| Q             | A
| ------------- | ---
| Bug fix?      | no
| New feature?  | yes
| Tests pass?   | none
| Fixed tickets | none
| Doc           | none

Merge before this PR:
- https://github.com/massiveart/husky/pull/281