WIP: enable availability selection for AKs

AKPlan/static/AKPlan/vendor/fullcalendar/core/locales/et.js

AKPlan/static/AKPlan/vendor/fullcalendar/core/locales/eu.js

AKPlan/static/AKPlan/vendor/fullcalendar/core/locales/fa.js

AKPlan/static/AKPlan/vendor/fullcalendar/core/locales/fi.js

...n/static/AKPlan/vendor/fullcalendar/core/locales/fr-ca.js

...n/static/AKPlan/vendor/fullcalendar/core/locales/fr-ch.js

AKPlan/static/AKPlan/vendor/fullcalendar/core/locales/fr.js

AKPlan/static/AKPlan/vendor/fullcalendar/core/locales/gl.js

AKPlan/static/AKPlan/vendor/fullcalendar/core/locales/he.js

AKPlan/static/AKPlan/vendor/fullcalendar/core/locales/hi.js

AKPlan/static/AKPlan/vendor/fullcalendar/core/locales/hr.js

AKPlan/static/AKPlan/vendor/fullcalendar/core/locales/hu.js

AKPlan/static/AKPlan/vendor/fullcalendar/core/locales/id.js

AKPlan/static/AKPlan/vendor/fullcalendar/core/locales/is.js

AKPlan/static/AKPlan/vendor/fullcalendar/core/locales/it.js

AKPlan/static/AKPlan/vendor/fullcalendar/core/locales/ja.js

AKPlan/static/AKPlan/vendor/fullcalendar/core/locales/ka.js

AKPlan/static/AKPlan/vendor/fullcalendar/core/locales/kk.js

AKPlan/static/AKPlan/vendor/fullcalendar/core/locales/ko.js

AKPlan/static/AKPlan/vendor/fullcalendar/core/locales/lb.js