Specificity, last column size

The last column size (index of the last part) is too long.

Solution

Add an empty column at the end

(from redmine: issue id 2974, created on 2020/12/11 by Matthieu Decorde)

added editor type::task + 1 deleted label

changed milestone to %TXM 0.8.4

added ui label

added tool::specificities label

changed milestone to %TXM 0.8.5