Level platter name improvements

This branch makes level select platters (and the save select) check V_ThinStringWidth instead of strlen to see if a name should be shortened, which prevents cutting off level names that could actually fit, and takes font replacements into account. It also moves the thin strings down one pixel, so they don't touch the selection border and match the position of the regular font.

next	This branch

added Enhancement label

changed milestone to %2.2.11

added small label

merged

mentioned in commit c0a21ccb