Allow owner to delete the room

[peccu]

@RocketChat/core

Closes #1578
(already closed...)

I copied implementations from admin's' room info tab to general room's right tab can access non admin users.

This implementation allows deleting room to user who have delete-* permission.

If you want to enable this user, you need to add these permissions to owner or user.

I think there are no owners in direct channel. We have to add delete-d to user.

[sampaiodiego]

I'm ok with this since there is an admin configuration allowing it.
I mean, admins should be able to enable or disable deleting rooms by owners, since them can already archive them.

[peccu]

sorry for my poor description...

I only added "DELETE" button to room info tab for non-admin user.

I want to permit owner to delete room.

Permissions table is not relative to this PR.

[sampaiodiego]

Oh, and I'm sorry for not being that clear.
What I tried to say was: I like the feature, but we need to create a setting to admins choose whether they allow owners to delete their rooms or not.

[rodrigok]

@sampaiodiego yes, so you can go the permissions page and disable that.