UK Translation: Entry Page references to different language versions - harmonize with other lanugages

[ursjoss]

The Ukrainian page currently references the links to the different language versions using full words instead of two-character ISO codes (with the exception of MN, which was introduced after the initial translation). This makes it more difficult to users that accidentally access the Ukrainian Translation to jump back.

See e.g. the English version:

In contrast the Ukrainian version:

Actually: We can add the long name for the language as title tag to have a hover pop-up with the explanation.