element inheritance from templates should be shown in edit form header

when editing a templated element (item, trigger, maybe also graph ?), header currently shows (for items) :

"Item 'template_1:item'"

that's for a case : template_1:template_2:template_3:host

instead, it should display :

"Item 'template_1:template_2:template_3:item'"

each template name should be clickable, and clicking it would open the same item (or any other element) properties for that exact template. this should be implemented for items, triggers and graphs at the very least.

edit : scratch the part about graphs, downstream graph properties can not be opened