Ship names

[Shinga13]

I recently changed the displayed ship name to a juction of displayprefix, displayclass and displaytype fields. This should never differ from the name of the wiki page that has been used up to this point, but might. This brings up the problem, that loading a build will show the page name. A possible solution would be to get rid of page names as identifier for the ship and making the junction the "primary key". Whether this makes sense and can work has to be determined.