DataTable '+' button dropdown positioning glitch

[charlesBochet]

Bug Description

On Table pages (ex: /companies), the "+" button dropdown is badly positionned.

Expected behavior

It should be floating below the "+" button and aligned right on the "+" button.

Technical inputs

Refactor the plus button to use DropdownMenu (specifying clickable component and dropdown component). A good example is SettingsObjectDisabledMenuDropDown component.

[rishabh1S]

Hi @charlesBochet , I would like to work on this.

[charlesBochet]

@rishabh1S sure! Thank you :)

[rishabh1S]

Well, This PR #2150 fixes the issue, and he did it before me. I think I am late. Thanks for the contribution.