Mentions and Emojis not working in input of edit message

[rodrigok]

[matthewshirley]

Basically doing what chatWindowDashboard does but changed to the correct class.

This is the best way I could see doing unless there is a common file these helpers can be placed in?

[engelgabriel]

What do you think @rodrigok ?
Is there is a common file these helpers can be placed in?
Maybe a global helper?

[rodrigok]

This popups can be moved to a separated template passing only the input selector to configure.

I can accept this PR and make this changes, but later today only.