#756 obvious-ify obsolete terms

[Antonia Lock]

Currently if you make an annotation to an obsolete term, the obsoleted term gets a red strikethrough on the annotations summary page, which is obvious & fine.

However, it is less obvious that the term has been obsoleted when you are browsing terms.

At the point of the lucene search, could obsoleted terms say:
genome stability defects (FYPO:0000241) OBSOLETE (or similar),

Also likewise point it out from the term overview page (see screenshots for what parts of the tool I am on about)