Move Toasts to bottom right and show close button

[evantahler]

Following after #2675, this PR moves the Toasts to the bottom right of the viewport and shows a close button

Checklists

Development

• Application changes have been tested appropriately

Impact

• Code follows company security practices and guidelines
• Security impact of change has been considered
• Performance impact of change has been considered
• Possible migration needs considered (model migrations, config migrations, etc.)

Please explain any security, performance, migration, or other impacts if relevant:

Code review

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[krishnaglick]

Instead of this, it looks like a Toast.Container can handle it for us. Unless we're avoiding that for some specific reason?
https://react-bootstrap.github.io/components/toasts/#toast-container-props

[evantahler]

I don't think that exists in react-bootsrap v1 (bootstrap 4) which we are still using in core

[evantahler]

NVM - ToastConatiner is not in the version we are using https://react-bootstrap-v4.netlify.app/components/toasts/