Handle tag hierarchies elsewhere than on the tab

[xavier]

Hi,

On the tag tab, you get the hierarchy of tag taken into account. However in several other places, it isn't the case.

I've been asked to do it for the contact edit too (the bottom), probably the same collapse expend system than on tab to make it easier to deal with lots of tags. Should it be in the core or an extension?

The con of the extension is that the core ends up fetching the list of tags for nothing, as it will be replaced by the tag tree.

X+