fixed bugs in overlay, dependent-select and select/type for husky-validation

in: dependent-select (change from attr to data); overlay (overflow;height); and select-type (catch null-data)

__Tasks:__
- [x] implement style adaption and change overlay behaviour
- [ ] gather feedback for my changes

__Informations:__

| Q             | A
| ------------- | ---
| Bug fix?      | yes
| New feature?  | no
| Tests pass?   | none
| Fixed tickets | none
| Doc           | none