Merge branch 'clean' into 'pregmod-master'

css/gui/options.css

src/events/intro/introSummary.js

src/events/intro/pcAppearance.js

src/futureSocieties/fsDecoration.js

src/gui/options/options.js

src/gui/options/optionsGroup.js

src/js/DefaultRules.js

src/js/assignJS.js

src/js/extendedFamilyModeJS.js

src/js/findSlave.js

src/js/removeSlave.js

src/js/utilsPC.js

src/uncategorized/costsBudget.tw

src/uncategorized/repBudget.tw