no-issue
- `canonicalUrl`
- Updated to use `canonical_url` & fall back to previous functionality
- `ogTitle`
- Updated to use `og_title` and fall back to previous functionality
- `ogImage`
- Updated to use `og_image` and fall back to previous functionality
- `ogDescription`
- Updated to use `og_description` and fall back to previous functionality
- `twitterTitle`
- Updated to use `twitter_title` and fall back to previous functionality
- `twitterImage`
- Upated to use `twitter_image` and fall back to previous functionality
- `twitterDescription`
- Updated to use `twitter_description` and fall back to previous functionality
refs #10790
- Moved /core/apps into core/frontend
- Moved /core/server/helpers to /core/frontend/helpers along with /core/server/services/themes
- Changed helper location in overrides
- Moved /core/server/services/routing to /core/frontend/services
- Moved /core/server/services/url to /core/frontend/services
- Moved /core/server/data/meta to /core/frontend/meta
- Moved /core/server/services/rss to /core/frontend/services
- Moved /core/server/data/xml to /core/frontend/services