add: 2 new statue on Nova and Nova button bugfix + new stairs #6294

Map renderings

Please file any issues here.

Github may fail to render some images, appearing as cropped on large map changes. Please use the raw links in this case.

Maps with diff:

MODIFIED - _maps/map_files/nova/nova.dmm (Z-level: 1)

Modified region: (79, 72) -> (193, 224)

Raw links: Old - New - Diff

Old	New	Difference

MODIFIED - _maps/map_files/nova/nova.dmm (Z-level: 2)

Modified region: (60, 79) -> (163, 181)

Raw links: Old - New - Diff

Old	New	Difference