[FEATURE] ck-editor enhancements

__Tasks:__

- [x] add the add-table-button
- [x] add the add-link-button
- [x] add the remove-link-button
- [x] modifie the dialog-boxes style
- [ ] gather feedback for my changes

__Informations:__

| Q             | A
| ------------- | ---
| Tests pass?   | no
| Fixed tickets | none
| BC Breaks     | no
| Doc           | none