- fixed that copy effect doesn't restore original image after effect's end;
- removed outdated availableImageSetCodes (all images auto-selected from tokens database now, related to #10139);
- refactor command objects to use CommandObjectImpl;
- refactor planes/emblems/etc objects to use MageObjectImpl, added copyable support;
- refactor another game objects to remove some duplicated fields;
- removed outdated token store format (example: BIRD.W.BIRD.CREATURE.1.1.full.jpg)
- removed duplicated cache images code;
- removed duplicated set code fields;
- removed outdated auto-generated thumb files (also all *.thumb.zip files will be deleted on startup);
