Package kde5-kcm-howdy: Information

- make more proper ScrollViews (ALT #48540)
- use utf-8 for model name (ALT #48538)
- make sure helper is disabled after the error (ALT #48537)
- don't show "Default" button on models tab (ALT #48536)
- fix typo in 'dark_threshold' (ALT #48535)

- show preview before face scan
- remove the 'altplace' option
- requires howdy

- enable the 'altplace' option
- disable AVX
- refactor