Improvements to compare feature

What's Changed

Compare feature improvements

• Reset the starting calculations to 0 when doing a compare so that manual compares are not skewed
• Removed Car/Iboost and Carbon data when its not enabled
• Updated the apps.yaml template to add Snug and also make the region configurable

• Tidy up to calculations/web UI by @springfall2008 in #1982
• Update compare.md by @springfall2008 in #1983

Full Changelog: v8.14.1...v8.14.2