Extend term editing functionality with "Delete old and create new"

[jakubklimek]

When I edit a term - specifically its label - its IRI stays the same - and this is not visible anywhere, only after copying the IRI to clipboard. At the same time, I am unable to change the IRI of the term even if I wanted to - I need to delete the old one and create a new one. This is very inconvenient, as it prevents easy correction of mistakes.

I suggest:

1. Displaying the term IRI in the term detail screen
2. When editing, offer two options.
   1. Edit current term
   2. Delete old term and create new one

Both cases in 2. should be solvable by allowing the users to edit the IRI, or at least allowing them to re-generate it based on the current value of the term label.
When the IRI is not changed, it is edit. When it is changed, it is delete and create.

Use case:
I create a term for "Společník", and later I realize I need to further specify it to "Společník komanditní společnosti". The edit should be as easy as changing the label and confirming I want to delete the old term and create a new one. I should not be forced to fill in everything again.