UI Changes:
* New bottom menu!
* Dark mode adaption!
* Support for multiple symptoms on day
* Other UI improvements

New functionality:
* Symptoms have their own colors
* Symptoms can be renamed
* Symptoms can be deleted
* Setting to prevent screenshots in app

Translations:
* Hindi completed
* French added
* Spanish added
* Polish added
* Slovenian added

Other improvements:
* Notifications no longer requires network discovery
