fix multiple things in EditHandler

[lekoala]

Description

This PR fixes multiple things in the EditHandler

• Fix layout like Fix incorrect CMS layout widths when bulk editing #295 + fix height for long forms
• Fix buttons (just commented for now...)
  
• Fix ->stat() method that doesn't exist anymore

Manual testing steps

Edit multiple items and see that it works :)

Issues

Pull request checklist

• The target branch is correct
  • See picking the right version
• All commits are relevant to the purpose of the PR (e.g. no debug statements, unrelated refactoring, or arbitrary linting)
  • Small amounts of additional linting are usually okay, but if it makes it hard to concentrate on the relevant changes, ask for the unrelated changes to be reverted, and submitted as a separate PR.
• The commit messages follow our commit message guidelines
• The PR follows our contribution guidelines
• Code changes follow our coding conventions
• This change is covered with tests (or tests aren't necessary for this change)
• Any relevant User Help/Developer documentation is updated; for impactful changes, information is added to the changelog for the intended release
• CI is green

[GuySartorelli]

Please don't comment out code. If it shouldn't be there, remove it entirely.

[lekoala]

i commented them because maybe it's possible to find the right attribute to set the proper icons but currently it's not working great as you can see in my screenshot :)

[GuySartorelli]

If you have the time to find out if there's an appropriate attribute and set it, please do it in this PR - otherwise please remove the commented-out code.

[lekoala]

@GuySartorelli icons fixed, syntax updated

[GuySartorelli]

LGTM, works great locally. Thanks for doing this!