* Added plastic clipboards; added plastic clipboards to the PTech machine; added clipboards & plastic clipboards to the autolathe
* Fixed plastic clipboard inhand sprites; added and implemented 'empty' clipboard prototypes
* Cleaned up code for empty clipboards; removed BoxFolderBaseEmpty since now it's redundant
* Extensive folder cleanup
* Bugfixed random folder spawns
* Reduced amount of paper in CrateServiceBureaucracy
* Medical folder sprite rename
* BaseTraitorSocialObjective sprite fix
* Added office paper to bureaucracy crate
* First pass at addressing recent review
* Second pass at addressing recent review
* Fix of weird migration.yml error
* whoops, forgot to undo the rename to folder-white.png in the last few commits
* whoops, didn't commit that last commit properly
* whoops, forgot to undo this reordering
60ea2b37fb