History page: display a tooltip for a selected entity

[ildar170975]

On a History page, a user may select a set of entities.

Each entity is displayed with it's friendly_name.
Consider a situation when several entities have SAME friendly_name.
If a user needs to remove some entity's graph - he needs to remove a corr. selected entity.
But which one???? All have same name.

Please display an entity_id in a tooltip: