WIP: enable availability selection for AKs

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

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

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

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

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

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

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

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

...n/static/AKPlan/vendor/fullcalendar/core/locales/pt-br.js

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

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

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

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

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

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

...static/AKPlan/vendor/fullcalendar/core/locales/sr-cyrl.js

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

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

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

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