Swap js/surgery folder strings to constants where applicable

js/medicine/surgery/addGenitals/addOvaries.js

js/medicine/surgery/addGenitals/addProstate.js

js/medicine/surgery/addGenitals/asexualReproOvaries.js

js/medicine/surgery/addGenitals/freshOvaries.js

js/medicine/surgery/addGenitals/immortalOvaries.js

js/medicine/surgery/addGenitals/mpreg.js

js/medicine/surgery/assets/boobs.js

js/medicine/surgery/assets/breastLift.js

js/medicine/surgery/assets/breastReconstruction.js

js/medicine/surgery/assets/breastShapePreservation.js

js/medicine/surgery/assets/butt.js

js/medicine/surgery/assets/fatGraft.js

js/medicine/surgery/assets/mastectomy.js

js/medicine/surgery/face/face.js

js/medicine/surgery/face/lips.js

js/medicine/surgery/genitals/anus.js

js/medicine/surgery/genitals/chop.js

js/medicine/surgery/genitals/fertility.js

js/medicine/surgery/genitals/geld.js

js/medicine/surgery/genitals/insemination.js