These were added with permission from shadowm, and were copied verbatim save for a small tweak to
the position of the menu button in the cutscene theme to get rid of the 3 pixel offset on the left
which had been corrected a few releases back in the default theme.
These were rendered unnecessary by 781276709d, which changed border rendering to use the terrain engine.
This also removes display::draw_border, which used the keys.
Since GUI1 widgets seem to rely on the given font size values in font.hpp
for their dimensions, those are unchanged. ThemeWML-provided sizes were adjusted,
and larger sizes assigned to elements that were too small with the new font.
Theme element rects were also adjusted as necessary.
Reverts a decision from commit 10b7cd63f5
in order to both make the Classic theme backportable to 1.12 and
eliminate an unnecessary complication for UMC.
At some point in the future, the Default theme will replace Classic when
the rumored UnitBox theme becomes the default, so I'd say naming its
directories "classic" makes sense, while the current Classic theme is
the "legacy" classic.
If we hadn't gotten stuck with Default using "classic" dirs in 1.12
there would be no need for any of this irritating nonsense.
