* Reducing wrapping divs from RenderingService
* Applying more styles to .kbnAppWrapper
Some being temporary and will need a better solution when introducing the page layout component
* Almost fixing tests for rendering service
Can’t figure out how to have a optional Observable
`Received: "kbnAppWrapper class-name”`
* Adding some comments
* [Dashboard] Using the APP_WRAPPER_CLASS
* fix test & ts types
* Fixin a few more tests that were using `.app-wrapper`
* Creating docs for new var and cleaning up some selectors
* Fixing reporting
* Fixing banner position and truncation
* Fixed CSS error in loading screen and jump in animation
* Fixing selectors in Canvas
* Remove unused var
* Added `APP_WRAPPER_CLASS` export from `server` and updated reporting to use it
* Fix monitoring icon clicks
* move APP_WRAPPER_CLASS definition to src/core/common
* Fixing Monitoring snapshots and wrapper class
* Moved `APP_WRAPPER_CLASS` utils but exported from `public` and `server`
* Remove old folder
* Fix dashboard test by only showing HR in edit mode
Co-authored-by: pgayvallet
Co-authored-by: tsullivan