* Theme refactoring
* disable the automatic tinting of surfaces with elevation in dark mode
* make the media warning visible again with the dark theme
* fix nav bar on api 27+
* use correct color for all media warnings
* Use blurhash as image preview and as sensitive media cover, close#1571
* Fix focal point for blurhashes
* Fix video indicator overlapping sensitive media indicator
* Add a preference for blurhash
* Add blurhash to report UI.
* Introduce StatusDisplayOptions