feat(recommendation list): back & front almost done

* Added recommendation list model
* Added smart serializers/viewsets for the model
* Added DRF permissions `IsFollower` and `IsPublic`
* Backend handling of following,

* Cleaned setup
* Textblock ready
* Better save button
* List and view recommendation

Connected for creation and save of recommendation

Almost done #34
9 jobs for master in 4 minutes and 1 second (queued for 3 seconds)