Small quality of life improvements, and fixing Unsplash wallpapers.

Full change log:
- Change Unsplash wallpaper options to use the full API.
- Add Kagi as a search engine option.
- Tweak to add as home page to work with new windows.
- Bug fixes and code improvements.

Bug fixes and introducing some quick URLs to get you started for background images.

Full change log:
- Add some Unsplash options for backgrounds.
- Minor tweaks to weather integration.
- Fix Todoist by upgrading to v2 of the API.